A couple of years ago I thought that Pictus catfish were really cool looking (still do) and without thought or checking up on them I got two and added them to my community tank , I loved their markings and long whiskers and the way they explored the tank constantly , and they ate all food offered . Then they started to grow , and they started to eat more aggresivly , and grew some more , then my other fish started to disappear , and when I fed anything to the other fish , the Pictus went wild to stuff as much as they could into their mouths and went into hiding unless there was food on the go .
In those days I thought I had a huge 55 gallon tank ... ha ha ha , and if I dropped anything , blood-worms , brine-shrimp , flakes into the tank they would sense it and zoom out and eat everything until they were full and go back to hiding , then I could feed the others .
I eventually gave them up for adoption to someone who had fish that couldn't fit into their mouths , they were about 5 inches when they left , as far as I can see they top out about 6/7 inches , but in my 55 gallon they were "monsters" ... ha ha ha .
Enjoy Them -David-