Can you tell us more about the tank?
It's a 57 litre (2 foot long) tank
Ammonia is 0, Unfortunately I don't have a nitrate tester. I took some water to an aquarium shop and they said it was fine. The tank's been set up for about 2 months, and I used the substrate and some water from a 6 month old tank as recommended by the aquarium shop.
Temperature is 27.5c, I raised it from 26c yesterday.
I change 10L of water around once a week.
I've tried feeding it frozen blood worms and
http://www.aquariumproducts.com.au/cata ... 3&catID=68 , but the only thing it seems to eat is goldfish flakes (it doesn't seem to feed from the bottom of the tank like the other loaches).
The other clown loach is new (1 week), as I thought this one might have been suffering from depression or something

(hunger strike).
No red worm, and unfortunately I don't have a quarantine tank.