.. You go out and buy an infrared night vision scope just to see some of your fish! For whatever reason I seem to find the most reclusive cat species the most interesting and observing their behavior and interactions with tank mates is part of my interest in these fishes. I tend to set up my tanks with environments that catfish in general prefer, no lights, gravel substrate and plenty of driftwood hiding places to be comfortable during the day. I have had and currently have fish I don't see for weeks if not months at a time as some will only leave their hiding spots in total darkness whether to feed or just roam around. This being the case I can't normally check their general health or with young fish observe their growth over time, in other words if they ain't floatin', they must be o.k. Some of my parauchenoglanis (dwarf giraffe cats) and one batrochoglanis ("jelly cat") and several species of botia loaches fit in this category, Anyway, if you have a night vision scope you can feed the fish, turn out the lights and observe the secret life of these strictly nocturnal specimens, seeing fish not observed for a long time and sometimes seeing ones you forgot you had!