i have an 8 ft tank in my dads house, it had 6 black moors, 2 weather loaches and one ghost koi, i got the black moors when they were about 2-3 inchs long, in a year, they grew about a cm max each, while my mates liked them and bought black moors too (they have 4 foot tanks), they bought 5 and 6 minnows. over the past few months, my mates had grown from 2-3 cm long to about 10 inchs long. one also bought two weather loaches, and they grow much larger than what mine still are. (as my black moors were not growing too well, i put them in my friends pond over half a year ago. they are still doing fine)
every fish i buy never seems to grow. (apart from fish in pond)
every fish i buy never seems to grow. (apart from fish in pond)