Corydoras Similis Behaviour

[Catsup]

Hello everybody,

As of last friday, I got back into the fishkeeping hobby and purchsed 3 C. Aeneus, 3 C. Paleatus and 3 C. Sterbai. Now these little guys are great, extremely active that I wonder whether they even get any sleep at all.

As of last sunday, I managed to acquire a couple of C. Similis that a pet shop owner didn't know of and were selling in a tank of Aeneus. One is about 3.3 cm (from nose to tail) long, the other a bit smaller at about 2.8 cm. The smaller guy is extremely zippy like it's other tank mates, and regurlarly scoures the bottom and goes into a feeding frenzy as one would expect... however, the larger guy tends to be quite lethargic (looks healthy though), and doesn't go crazy when food is introduced, s/he does get up from time to time to have a swim and poke about, but for the most part, s/he just sits stationary... does this behaviour seem odd given the behaviour of all the other corydoras?

Water temp is 25C, water chem is fine.

Tank is a 3 footer (can't recall the capacity, did about 10+ years ago when I first kept fish).

Other fish are 4 medium angelfish which are quite placid and tend to stay out of the way of the corydoras.

Filter is undergravel (with rounded gravel), and there are 2 wisterias and an amazon sword.

Thanks everybody,

N.

[WolverineFan]

Have you seen it eat yet? Every now and then it seems that I get a cory that takes longer than the rest to acclimate. I'd give it a week before I got too concerned.

[Catsup]

That's really my main concern, as I haven't seen the little bugger eat yet... I just dropped a couple of sinking wafers next to it -- about 2 cm away, and it wasn't interested... I guess the only recourse for now would be just to wait a bit and see... thanks for the reply.