The Puffer Forum

I recently bought 2 figure 8's, and by their actions they seem to be doing fine, good appetite, and very active.

When they were introduced to their first tank (44 gal hex tank). One fish was less distinctive in its markings than the other, less contrast between the yellow and green/brown.

After a time I was required to move them to a 10 gal holding tank, as they took a liking to Colombian shark fins..This is just a temporary change until larger accommodations can be set up...

But a strange thing happened, the pale fish became more distinct in its coloration and the other became more pale (for lack of a better term)
Is this stress issue, a display of dominance, sleep coloration...as I have stated they eat well and are active (the small tank is set up to have a current, and they seem to enjoy riding it, but rest in the plants (artificial)
during the nights. Their bellies are white (no darker coloration) and the mid line of their bodies does not look like a gray line.. Also the coloration of the one that is less distinct seems to become more defined over night...

If they had both reacted the same way, or showed other signs of stress or illness, I would not be so confused...any thoughts?

most likely stress related. if there is no grey belly and they are eating and acting healthy i see no cause for alarm personally, IMHO. Puffers change colours according to mood quite freely. Just make sure to get them to bigger quarters asap.

Are you keeping them in brackish water?

As long as they are eating, seem otherwise healthy, then colours can vary widely. Each is a unique individual, don't forget.

Yes, water is lightly brackish, ( I am slowly raising it since I got them frm the lfs)
SG approx 1.006. Both continue to eat very well, and are very active. I will keep their individuality in mind, thnx

My 2 GSP's have quite different markings, it's very easy to tell them apart. They act so differently to, puffers have such awesome personalities!

I'd leave the SG at ~ 1.006. No higher..

Ok I will leave the SG as is, but was under the impression that most were kept in the 1.008 area, but it works for me, as long as it works for them...

Check out the excellent article written about them in our Library. 1.005 is recommended best for them.