auriglobus modestus/ chonerhinos silus

[Boxermom]

Is the Roberts, T.R you mention the same RTR thats on this forum? Or just coincidence?

That would be T.R.R. Our RTR is Robert T. Ricketts if I'm not mistaken.

[Martin Hi.]

hi at all,
i nobody will talk to me, i will go on by myself...
i´ve found out what it means (thanks to a good dictionary )
therefore i have made mesurements of the caudal peduncle and the total length on 3 of my 5 auriglobus. with this mesurement it is claer that i have auriglobus modestus. i have also compared my fish with the pictures of roberts taking a look on the snout: same! also the lips: as i can see it, all lips are "equally projecting.
i will take a look on your pictures too but i think that all of them are a. modestus.
if you want to take a mesure:
total lenght : depth of caudal peduncle= ...
if ... is 7,2-8,2 it should be c.silus
if ... is 6,7-7,4 it should be a. modestus
of course 7,2-7,4 is a problem. but my mesurements left no doubt!
the snouts are difficult to compare if you do not have the pictures...
martin

[The Fisherman]

Thanks Martin Hi., very useful info.

Sorry for not replying to your question about the caudal peduncle, I guess I didn't understand your question.

When you say measurements of 7.2-8.2, what dimensions is that? Mm? Cm?

I agree with you about the color, I don't think Silus or Modestus have different colors. X.naritus is usually gold, from pictures I have seen, but theres not enough rock hard evidence to really prove anything.

Personally, I don't really care if mine are Modestus or Silus. They don't look much different, and have very similar if not exactly same care requirements. Whatever species that they are was decided when they hatched from their egg.

[Boxermom]

Personally, I don't really care if mine are Modestus or Silus. They don't look much different, and have very similar if not exactly same care requirements. Whatever species that they are was decided when they hatched from their egg.

Agreed. I'm certainly not going to obsess over the differences or knock them out so I can count spines and measure finage. Don't care what they are. They're pretty and I like them, regardless of what label is stuck on them.

[Martin Hi.]

hi,

Thanks Martin Hi., very useful info.

Sorry for not replying to your question about the caudal peduncle, I guess I didn't understand your question.

When you say measurements of 7.2-8.2, what dimensions is that? Mm? Cm?

I agree with you about the color, I don't think Silus or Modestus have different colors. X.naritus is usually gold, from pictures I have seen, but theres not enough rock hard evidence to really prove anything.

Personally, I don't really care if mine are Modestus or Silus. They don't look much different, and have very similar if not exactly same care requirements. Whatever species that they are was decided when they hatched from their egg.

@1: you´re welcome!
@2: hihi, if my english is even that bad you may guess how difficult it was to understand that text!
@3: no, that number is no "real" mesurement. the number expresses "times in standard length". wich means for example the the standard length is 7,2 times the depth of the caudal peduncle. one cannot give that in cm or mm cause you could also take the mesure on a poster: if the fish on the poster is 1,30 m and his caudal peduncle 30 cm deep it will also be the same number.
@4: jepp
@5: i disagree on that point: while they are really nearly looking the same they do not have the same care requirements: the families of chonerhinos, auriglobus ans xanthopterus are very specialized families. not to talk about xantopterus being a saltwaterspecies: while one auriglobus species is to nearly 100% feeding on fish-scales and fins, and another one is only feeding on aquatic insects, chonerhinos silus feeds mainly on aquatic and terrestrial insects, but also on vegetable matter (and no fish). auriglobus modestus feeds mainly on terrestrial insects, shrimps and seeds, and to a less extent on whole fish. while this is very nearby, it is not the same.
a second thing is the end-size: if you know for sure that you are keeping modestus you will probably plan a a little bigger tank than for the silus. there could also be other things...
martin

[The Fisherman]

@5: i disagree on that point: while they are really nearly looking the same they do not have the same care requirements: the families of chonerhinos, auriglobus ans xanthopterus are very specialized families. not to talk about xantopterus being a saltwaterspecies: while one auriglobus species is to nearly 100% feeding on fish-scales and fins, and another one is only feeding on aquatic insects, chonerhinos silus feeds mainly on aquatic and terrestrial insects, but also on vegetable matter (and no fish). auriglobus modestus feeds mainly on terrestrial insects, shrimps and seeds, and to a less extent on whole fish. while this is very nearby, it is not the same.
a second thing is the end-size: if you know for sure that you are keeping modestus you will probably plan a a little bigger tank than for the silus. there could also be other things...
martin

Did they actually re-classify Silus as a Chonerhinos? In the book I have it is an Auriglobus...

You do make a valid point though, it is entirely possible there are some differences that have not yet been found too. I mean, what if Silus turns out to be a livebearer? While thats highly unlikely and probably too far out of proportion in this case.

In Dr. Eberts book, it says that the only difference is the form of the body. I do not beleive that there are any coloration differences.

It also says that Modestus' are very lively, actively searching for food, and swimming along front glass when young. My modestus is quite old and still does all that I wonder why though...

[Martin Hi.]

hi fisherman,

Did they actually re-classify Silus as a Chonerhinos? In the book I have it is an Auriglobus...

You do make a valid point though, it is entirely possible there are some differences that have not yet been found too. I mean, what if Silus turns out to be a livebearer? While thats highly unlikely and probably too far out of proportion in this case.

In Dr. Eberts book, it says that the only difference is the form of the body. I do not beleive that there are any coloration differences.

It also says that Modestus' are very lively, actively searching for food, and swimming along front glass when young. My modestus is quite old and still does all that I wonder why though...

@1: yes they did. it was maurice kottelat. i´m not at home. but if you remind me in some days i will send you the name of the literature.
@2: sic!
@3: dr. ebert ist also only a human being! do not want to say bad things about him but there are some faults in his book... but on one of the last pages of his book i remember that he gave an identifikation-key wich relies on roberts.
@4: my did that too. but the biggest ones get more calm now. they are still swimming around sometimes but not up and down the glass.
martin

[The Fisherman]

@3: dr. ebert ist also only a human being! do not want to say bad things about him but there are some faults in his book... but on one of the last pages of his book i remember that he gave an identifikation-key wich relies on roberts.

I agree. He has a good book, but I can find faults in it as well.

It seems you are as interested in the Auriglobus family as I am! I hope to breed them one day.

I would like to see the literature where Silus was re-classified, I find that very interesting.

[Martin Hi.]

hi,
actually i´m interested in every puffer.
the namegiving is mor than complicated. roberts (in the teyt i have cited) called them chonerhinos. kottelat (for example kottelat, maurice: Nomenclature ot the genera Barbodes, Cyclocheilichthys, Rasbora and Chonerhinos (Teleostei: Cyprinidae and Tetraodontidae), with comments on the definition of the first reviser, in: The Raffles Bulletin of Zoology, Vol 47, Nr. 2) found that name not valid exept for xenopterus naritus wich he calles chonerhinos naritus then. all the other species have been called auriglobus by him. i am still waiting for more literatur to be able to answer you question, but this could be a beginning, if you like to search by yourselve:
http://www.fishbase.org/Eschmeyer/EschP ... m?ID=25174
martin

[Cooper]

LOL -- This is so scientific. I love it. I'm such a nerd that way. At the same time, I just think, "Wow! Pretty shiney puffers!"

[Martin Hi.]

like me!
martin