#2 Dark Color and #1 loosing weight. Help!
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Read this before posting!!
Since this board has been up, we have found there are several questions that routinely get asked in order to help diagnose problems. If you can have that information to begin with in your post, we'll be able to help right away (if we can!) without having to wait for you to post the info we need.
1) Your water parameters - pH, Ammonia, Nitrite, Nitrates and salinity (if appropriate). This is by far the most important information you can provide! Do not answer this with "Fine" "Perfect" "ok", that tells us nothing. We need hard numbers.
2) Tank size and a list of ALL inhabitants. Include algae eaters, plecos, everything. We need to know what you have and how big the tank is.
3) Feeding, water change schedule and a list of all products you are using or have added to the tank (examples: Cycle, Amquel, salt, etc)
4) What changes you've made in the tank in the last week or so. Sometimes its the little things that make all the difference.
5) How long the aquarium has been set up, and how did you cycle it? If you don't know what cycling is read this: Fishless Cycling Article and familiarize yourself with all the information. Yes. All of it.
We want to help, and providing this information will go a LONG way to getting a diagnosis and hopeful cure that much faster.
While you wait for assistance:
One of the easiest and best ways to help your fish feel better is clean water! If you are already on a regular water change schedule (50% weekly is recommended) a good step to making your fish more comfortable while waiting for diagnosis/suggestions is to do a large water change immediately. Feel free to repeat daily or as often as you can, clean water is always a good thing! Use of Amquel or Prime as a dechlor may help with any ammonia or nitrite issues, and is highly recommended.
Note - if you do not normally do large water changes, doing a sudden, large water change could shock your fish by suddenly changing their established water chemistry. Clean water is still your first goal, so in this case, do several smaller (10%) water changes over the next day or two before starting any large ones.
Read this before posting!!
Since this board has been up, we have found there are several questions that routinely get asked in order to help diagnose problems. If you can have that information to begin with in your post, we'll be able to help right away (if we can!) without having to wait for you to post the info we need.
1) Your water parameters - pH, Ammonia, Nitrite, Nitrates and salinity (if appropriate). This is by far the most important information you can provide! Do not answer this with "Fine" "Perfect" "ok", that tells us nothing. We need hard numbers.
2) Tank size and a list of ALL inhabitants. Include algae eaters, plecos, everything. We need to know what you have and how big the tank is.
3) Feeding, water change schedule and a list of all products you are using or have added to the tank (examples: Cycle, Amquel, salt, etc)
4) What changes you've made in the tank in the last week or so. Sometimes its the little things that make all the difference.
5) How long the aquarium has been set up, and how did you cycle it? If you don't know what cycling is read this: Fishless Cycling Article and familiarize yourself with all the information. Yes. All of it.
We want to help, and providing this information will go a LONG way to getting a diagnosis and hopeful cure that much faster.
While you wait for assistance:
One of the easiest and best ways to help your fish feel better is clean water! If you are already on a regular water change schedule (50% weekly is recommended) a good step to making your fish more comfortable while waiting for diagnosis/suggestions is to do a large water change immediately. Feel free to repeat daily or as often as you can, clean water is always a good thing! Use of Amquel or Prime as a dechlor may help with any ammonia or nitrite issues, and is highly recommended.
Note - if you do not normally do large water changes, doing a sudden, large water change could shock your fish by suddenly changing their established water chemistry. Clean water is still your first goal, so in this case, do several smaller (10%) water changes over the next day or two before starting any large ones.
#2 Dark Color and #1 loosing weight. Help!
Ph- 8.4
Ammonia- Not sure
Nitrite-0
Nitrates- 80
Salinity- Not sure add 1tbs/5 gal each water change
Alkalinity- 300
40 gal- 7 GSP's about 1.5 inches
Feeding I mainly use freez dried bloodworms and krill. Ocasionally snails and ghost shrimp. Water changes about every 2 weeks 75% change.
No changes in the last week.
The aquarium has been set up for a year in March. I had 8 GSP's but lost one due to illness I am writing about.
I am wondering what is making my GSP's sick (fish #1 in pictures). I lost one of the 8 about a month ago and am worried that another fish has the same disease or virus. I am seeing a huge difference in the puffers size compared to the rest, a sunk in belly, and much lighter coloring than the rest. This loss of weight happens over time and takes a while. My puffer that died before lasted about 6 months looking really sickly. I didnt know what to do. I have read articles trying to find an explination but nothing seems to fit. I have not noticed worms. But the symptoms sound similar to what is happening to my fish.
I also have another GSP that I am concerned about. This goes with Fish #2 pictures. He is really dark and his mouth area seems to be swolen. He is hanging around on the bottom of the tank quite a bit and I dont see him eating food as I am watching the others eat. I dont know what seems to be wrong with him. If you have any info please let me know! I HATE lossing these little dudes! Thanks!
Ammonia- Not sure
Nitrite-0
Nitrates- 80
Salinity- Not sure add 1tbs/5 gal each water change
Alkalinity- 300
40 gal- 7 GSP's about 1.5 inches
Feeding I mainly use freez dried bloodworms and krill. Ocasionally snails and ghost shrimp. Water changes about every 2 weeks 75% change.
No changes in the last week.
The aquarium has been set up for a year in March. I had 8 GSP's but lost one due to illness I am writing about.
I am wondering what is making my GSP's sick (fish #1 in pictures). I lost one of the 8 about a month ago and am worried that another fish has the same disease or virus. I am seeing a huge difference in the puffers size compared to the rest, a sunk in belly, and much lighter coloring than the rest. This loss of weight happens over time and takes a while. My puffer that died before lasted about 6 months looking really sickly. I didnt know what to do. I have read articles trying to find an explination but nothing seems to fit. I have not noticed worms. But the symptoms sound similar to what is happening to my fish.
I also have another GSP that I am concerned about. This goes with Fish #2 pictures. He is really dark and his mouth area seems to be swolen. He is hanging around on the bottom of the tank quite a bit and I dont see him eating food as I am watching the others eat. I dont know what seems to be wrong with him. If you have any info please let me know! I HATE lossing these little dudes! Thanks!
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- julianchan
- Fahaka Puffer
- Posts: 709
- Joined: Tue Jun 17, 2008 4:25 am
- My Puffers: 1 GSP Elevator.....Lord Vator to everyone else...
- Location: Los Angeles, CA
Re: #2 Dark Color and #1 loosing weight. Help!
First off, there are too many GSP's in that tank. They need at least 30 gallons per puffer to deal with stunting and bio load issues.
Right off the bat, if you have had all these puffers in there since March or April, I would say that it is water quality that is hurting them. I don't think that tank can cope with the bio load of all those puffers.
It would be a good idea for to get a liquid water test kit for to know your water parameters. You need to keep your Ammonia and Nitrites at 0, and Nitrates as low as possible, around the 25ppm mark. With that many puffers in there right now, you are going to have to do water changes pretty much every day. I would recommend choosing which puffer you love the most, and try and find a good home for the rest of them. That is pretty much going to be the only way you will be able to save them, other than investing in a 210 gallon tank. I would not feel bad about only keeping one of these puffers in the tank. To me, they get more personable that way, and they do great by themselves.
Please read the GSP article in the pufferpedia section. Its located in the brackish water section. BTW, aquarium salt does not constitute for making brackish water, IDK what type of salt you are using.
Good luck, I hope you can find a good home for the puffers, if not, the LFS's around you should be able to take them off your hands happily. Just for stopping by here, I know you care...please do right by these puffers. They are awesome pets.
Right off the bat, if you have had all these puffers in there since March or April, I would say that it is water quality that is hurting them. I don't think that tank can cope with the bio load of all those puffers.
It would be a good idea for to get a liquid water test kit for to know your water parameters. You need to keep your Ammonia and Nitrites at 0, and Nitrates as low as possible, around the 25ppm mark. With that many puffers in there right now, you are going to have to do water changes pretty much every day. I would recommend choosing which puffer you love the most, and try and find a good home for the rest of them. That is pretty much going to be the only way you will be able to save them, other than investing in a 210 gallon tank. I would not feel bad about only keeping one of these puffers in the tank. To me, they get more personable that way, and they do great by themselves.
Please read the GSP article in the pufferpedia section. Its located in the brackish water section. BTW, aquarium salt does not constitute for making brackish water, IDK what type of salt you are using.
Good luck, I hope you can find a good home for the puffers, if not, the LFS's around you should be able to take them off your hands happily. Just for stopping by here, I know you care...please do right by these puffers. They are awesome pets.
Re: #2 Dark Color and #1 loosing weight. Help!
Do you think that MelaFix or PimaFix will help them at all?
I feel terrible! I stay up at night all the time thinking about them! I guess I will have to try and find new homes for them. This might be a little difficult to do! Im really bummed! Thanks for your help and concern. Thanks again!
I feel terrible! I stay up at night all the time thinking about them! I guess I will have to try and find new homes for them. This might be a little difficult to do! Im really bummed! Thanks for your help and concern. Thanks again!
- julianchan
- Fahaka Puffer
- Posts: 709
- Joined: Tue Jun 17, 2008 4:25 am
- My Puffers: 1 GSP Elevator.....Lord Vator to everyone else...
- Location: Los Angeles, CA
Re: #2 Dark Color and #1 loosing weight. Help!
Possibly, but I would keep up with daily water changes till you can get your puffer count down. That would be more important than anything. You will probably see them perk up a bit after that. Then you might run into territorial issues (fin nipping, even killing), just because of the space. They are not schooling fish.
Takes a lot to say goodbye to a puffer, and to have to see 5 or 6 go is really sad, but its better than the alternative of having them die.
Takes a lot to say goodbye to a puffer, and to have to see 5 or 6 go is really sad, but its better than the alternative of having them die.
- edmlfc1
- Mbu Puffer
- Posts: 2011
- Joined: Sun Sep 09, 2007 5:03 pm
- My Puffers: Elvis (Stars & Stripes) R.I.P. 9/11/11
125G:Fahaka (Annabelle) - Location (country): U.S.A.
- Location: Texas
Re: #2 Dark Color and #1 loosing weight. Help!
The first thing you need to do is get those nitrates down below 20. Do some large water changes daily until you get it down. I lost a GSP when my nitrates went to 40. After you get the nitrates down you might see a huge difference in them without any meds. You will need a very large tank or multiple tanks if you plan to keep them.
Need to know what kind of puffer you have? Click on Puffer ID.....Puffer ID: ug.php/v/PufferPedia/
What to feed your puffer? Click on Feeding......
Feeding: library/feeding/feeding-your-puffers/
Have a GSP, need more information......Click on GSP Article.....
GSP Article: library/puffers-in-focus/an-introductio ... d-puffers/
What to feed your puffer? Click on Feeding......
Feeding: library/feeding/feeding-your-puffers/
Have a GSP, need more information......Click on GSP Article.....
GSP Article: library/puffers-in-focus/an-introductio ... d-puffers/
- mike_freegan
- Dwarf Puffer
- Posts: 83
- Joined: Sun Feb 03, 2008 2:37 pm
- My Puffers: 1 x Figure 8
Re: #2 Dark Color and #1 loosing weight. Help!
Removed
Last edited by mike_freegan on Sun Feb 22, 2026 3:49 pm, edited 1 time in total.
17 gallon:
Fig-8 puffer
5 Bumblebee gobies
Zebra/Spotted Nerite Snails
Fig-8 puffer
5 Bumblebee gobies
Zebra/Spotted Nerite Snails
Re: #2 Dark Color and #1 loosing weight. Help!
Im pretty sure that the puffers would be better in my 45 gal tank rather in a tank at Wal-Mart where I got them from a year ago. There is no way Im taking them back there. I will for sure get marine salt and I did invest in a bigger aquarium. I wil set it up and run it for a few days with marine salt and then let them get sued to their new home. They are doing better today since I did a water change! Thanks! Christine
- Agnate
- Former Staff Member
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(Captain Abe) - Location: Ontario, Canada
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Re: #2 Dark Color and #1 loosing weight. Help!
Yeah, please don't take them to Walmart. Walmart ACTUALLY flushes any fish brought into its store, which is pretty sad, if you ask me.
Also, please read up on cycling an aquarium (we have an article about the different beneficial bacteria that form during a cycle, and what you'll need to have before allowing fish into the aquarium). If you just put the puffers into a new tank without cycled media, you're going to make their lives pretty short. If you already know about cycling, then I apologize, but we see too many people here who don't know about it.
Also, please read up on cycling an aquarium (we have an article about the different beneficial bacteria that form during a cycle, and what you'll need to have before allowing fish into the aquarium). If you just put the puffers into a new tank without cycled media, you're going to make their lives pretty short. If you already know about cycling, then I apologize, but we see too many people here who don't know about it.
Did our staff successfully help you? The Puffer Forum is an incredible resource and is run completely on the donations of its viewers. Proceeds from the Puffer Forum store go towards future contests and keeping the site running. Donations may also be made via PayPal.
- Paul
40 gallon - Future home of Abei Puffer
28 gallon - 1 Abei Puffer (Captain Abe)
5 gallon - 1 Betta (Frederico)
- Paul
40 gallon - Future home of Abei Puffer
28 gallon - 1 Abei Puffer (Captain Abe)
5 gallon - 1 Betta (Frederico)
- Christemo
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Re: #2 Dark Color and #1 loosing weight. Help!
7 GSPs in a 40 gallon!?
Wow...
Wow...

Two F8's, two tiny fantails and a pleco call me mommy.
- Agnate
- Former Staff Member
- Posts: 1203
- Joined: Mon Dec 10, 2007 7:44 pm
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1 Abei Puffer [Monotrete Abei]
(Captain Abe) - Location: Ontario, Canada
- Contact:
Re: #2 Dark Color and #1 loosing weight. Help!
Honestly, I don't think it's that unreasonable when the only information you've received is from Walmart or those random puffer websites with horribly construed data. Sure, everyone from this forum knows that they need a lot of water volume, but most stores don't give out that kind of information. Combine that with the fact that they're only 1.5 inches each (which really isn't that big), and that they take forever to grow (which allows for the false assumption that they won't really get bigger), and you've got yourself a recipe for overstocking. It happens, but at least she's cares about her puffers and wants to do the right thing! 
Did our staff successfully help you? The Puffer Forum is an incredible resource and is run completely on the donations of its viewers. Proceeds from the Puffer Forum store go towards future contests and keeping the site running. Donations may also be made via PayPal.
- Paul
40 gallon - Future home of Abei Puffer
28 gallon - 1 Abei Puffer (Captain Abe)
5 gallon - 1 Betta (Frederico)
- Paul
40 gallon - Future home of Abei Puffer
28 gallon - 1 Abei Puffer (Captain Abe)
5 gallon - 1 Betta (Frederico)
Re: #2 Dark Color and #1 loosing weight. Help!
I am an avid diver whom used to live in hawaii and fell in love with puffers while I was there. I received the little guys as a gift and had NO idea on how to raise them. I can tell you that I have honestly spent over 100 hours researching and reading on how to raise these critters. I love them and will do anything to take care of them so please dont be rude and judge me for 7 puffers in a 45gal. I didnt know, but I do know I can make it better and there are not many people out there that would go through the huge hassle of taking care of these amazing fish. So give me some credit please!
- edmlfc1
- Mbu Puffer
- Posts: 2011
- Joined: Sun Sep 09, 2007 5:03 pm
- My Puffers: Elvis (Stars & Stripes) R.I.P. 9/11/11
125G:Fahaka (Annabelle) - Location (country): U.S.A.
- Location: Texas
Re: #2 Dark Color and #1 loosing weight. Help!
We are not trying to be rude, I think most of us were in shock. I apologize if I was rude to you. Just keep up with those water changes and try to keep the nitrates below 20. I promise you will see a big difference in the puffers with lower nitrates. Like I mentioned before: When I moved tanks my nitrates went above 40 and I lost one of my little pals. It broke my heart. I totally know how you feel. You can get attached really quick to these guys. Just keep doing water changes, I can't stress that enough.
Just to give you an idea, I do 50% every week, sometimes twice a week on my tank.
With that many in a 45G you will probally need to do 50% every other day until you upgrade your tank.
Need to know what kind of puffer you have? Click on Puffer ID.....Puffer ID: ug.php/v/PufferPedia/
What to feed your puffer? Click on Feeding......
Feeding: library/feeding/feeding-your-puffers/
Have a GSP, need more information......Click on GSP Article.....
GSP Article: library/puffers-in-focus/an-introductio ... d-puffers/
What to feed your puffer? Click on Feeding......
Feeding: library/feeding/feeding-your-puffers/
Have a GSP, need more information......Click on GSP Article.....
GSP Article: library/puffers-in-focus/an-introductio ... d-puffers/
Re: #2 Dark Color and #1 loosing weight. Help!
edmlfc1 I really appreciate all of your help and I do not think that you are being rude at all! You are being very helpful to me and it is appreciated! Thanks so much!
PS-New water change Nitrates-below 20!
YAY!
PS-New water change Nitrates-below 20!
YAY!
Re: #2 Dark Color and #1 loosing weight. Help!
what do you guys think I should use in my new tank....aquarium rocks or sand? which is better? easier to clean?
- mike_freegan
- Dwarf Puffer
- Posts: 83
- Joined: Sun Feb 03, 2008 2:37 pm
- My Puffers: 1 x Figure 8
Re: #2 Dark Color and #1 loosing weight. Help!
Removed
Last edited by mike_freegan on Sun Feb 22, 2026 3:49 pm, edited 1 time in total.
17 gallon:
Fig-8 puffer
5 Bumblebee gobies
Zebra/Spotted Nerite Snails
Fig-8 puffer
5 Bumblebee gobies
Zebra/Spotted Nerite Snails
