their diet is terrible, that's probably one of the reasons they aren't growing... if they are natts, their growth slows considerably after 6 inches, cariba and piraya will also grow a bit slower after 6 inches, but not as slow as nattspeter the graetfish;3535138; said:DUDE I FELL THE SAME WAY I HAVE 7 P'S AND THERE ALL OVER 6INCHS. AND THEY R HARD TO GET EATING ON A REG. I FED THEM LIVE 3 4 TIMES A WEEK ONCE DURING THAT ITS A MOUSE, AND THE REST ITS LIVE BIG GOLD FISH. AND 2WICE A MONTH THEY EAT BEEF HEART AND SHRIMP. BUT STILL THEY REALLY HAVENT GROWEN CAN SOMEONE HELP?