Backyard Aquaponics
A place to discuss aquaponics

my fish are only prob 3-4 cm long but they dnt come to the top to feed but they seem ok is that a problem is it normal

Hard to tell - there's a 1,000 different reasons that fish don't feed at any particular time.

Do they usually get fed at the time?
What was the water temp?
Have you done any amm/nrite/nrate readings ? What were they ?
What time of day was it ?
Do they usually come up to feed ?
..........

Everybody on this forum is happy to help answer questions and give advice but you need to give
them some basic information to help them help you

And has there been a fall in barometric pressure ...

Yep, wanted to list that one too, but forgot !

Yes, there was a barometer drop over the weekend

Dont forget full moons

Hasn't been a full moon since the last one Charlie....

ok thanks guys i will test the water again on the weekend and the temp etc last test the nitrates and other tests where algood usually feed them at night and early morning before i go to work and ive never seen them come to the top since i got them they seem very lively on the bottom and the plants are thriving, im only new to this so i am very grateful for the advice youve given so far on wat to look for and things to check

Seriously Dandy... Silver Perch will go completely off their feed if there's a barometric pressure fall... before a front arrives... or as a low developes...

This could happen this afternoon for instance...

Scramble an egg and give it 30 secs in the microwave and try them with that, and you may be surprised

Have you read the whole of this thread Dandy ? Particularly the first page.