Some friends left the country and left me their aquarium - there are 2 fish in it - one that you can hardly see and a... "classic" one. don't know any name so... excuse my ignorance.
They also left me the food for the fish and said - don't give them too much.

For severall months i have been feeding them but one (the hidden one) just never eat.
I thought that he eats only dirt and such since he is stuck with his big mouth under a rock.
Last week i've found another small box with food on which was written - "catfish"
I've put some there and the hidden one seemed to eat it. So i thought.. boy i'm stupid.. this guy was SO hungry.
It is a catfish and i hardly know anything about him - i want to make it up - so please tell me what kind of fish he is and how should i treat him best.
Thank you so much.
I'm sorry for the bad pictures but he is SO hidden - these are my best shots on the week - i couth him out under a big shell. If not enough..i'll hunt him some more.
