Hi All Well my five-strong shoal of C. sterbai have settled down nicely in my tank. But I am worried about getting food to them. I have two issues: 1) the tank is 24 inches deep, and 2) there are two shoals of fast moving tetras, and one adult Bolivian ram that can fit pea-sized objects in its mouth ...

Well on Friday I returned to the shop and picked up another 3 sterbai . Now I have five catfish driving me crazy with this swimming up and down, back and forth behaviour! But I am heartened by what you have both said, and am confident (fairly) that they will settle down. Here's to patience patience ...

Thanks Mats - that's great info. I am very tempted to get 2 more to bring their numbers up. I think I'll be patient, wait a couple more days and see what happens. Was particuarly heartened about the height issue - this did have me worried, but no longer.

Thanks!

Dear All A few days ago I bought a pair of C. sterbai. These are the first corydoras I have kept in over 15 years. The problem is, all they do is incessantly swim up and down the sides of the tank, as if trying to get out. Literally, ALL they do is swim up and down, back and forth against the glass ...