I got him 2 days ago, tried to determine his L number by browsing planetcatfish.com, he is more like an L027 isn't he? can you determine his gender from the pictures? any advice about how to keep him happy? my tank is 18 gallons ammonia is zero, nitrate 0.15, temperature 28C. He looks happy, he has been eating NON-STOP for 2 days (algae and driftwood) he is quite active (a bit shy though) and contrary to my expectation a very fast swimmer! it took the salesman quite a bit of time to catch him with a net. I have two rock caves perfectly fit for him but he rather be hanging on the driftwood all the time! The way he moves is very interesting and funny too, it's like he's a nervous lunatic

anyway he is a very entertaining fish and well worth the money! Yesterday I found one of my danios trying to nip his fins 1 or 2 times but seems it was just out of curiosity I haven't seen that happen again.
by the way I read somewhere that they blink! I was sure it's a joke but I actually saw him do it!! does it every 10-15 minutes. why do they do that? do they have eye lids? to me it was more like turning his eyeballs vertically.