Thanks Viktor, yeah saw this yesterday but didn't respond as others have responded with correct information and advice. I have 3 of 'em going on 5 months now. I got mine from Aqua Imports, at the time they were advertised as a parauchenoglanis species but after ordering I requested a photo and determined they were notoglanidium macrostoma but decided to get them anyway. They arrived at around 2 1/2" and since have grown about an inch. Maximum size is said to be around 7". They will eat the usual flakes and pellets, are very shy and nocturnal and if given driftwood hiding places they prefer, you won't see them at all during daylight hours. They are a peaceful species and get along with their own kind and other cat species, in my case an anadoras grypus and 2 rhinodoras dorbigny, I never see them either, of course. I can also recommend wetspottropicalfish.com as I've gotten several kinds of cats from them. There are several species of notoglanidium but have never seen any other than macrostoma available. With parauchenoglanis there are several species as well that range from 6" specimens to 18" one's. In auchenoglanis species, many will grow to 2 or 3' long with the exception of a. biscutatus (have 3) that stay under a foot long, so far...