Are these fish constipated

[Andreas]

Hi I have these 5 dwarf neon rainbow fish with my mac and they all have these poop stuck in them
What could it be and what should I do
In have already lost a female that also looked like this but she also had major diformities

 

[Mike Wise]

Probably eating too much (dry?) food. If they are acting normal then they should be OK.

 

[Andreas]

Probably eating too much (dry?) food. If they are acting normal then they should be OK.

I give them 2 types of pellets and frozen brine shrimp

 

[Mike Wise]

Pellets probably have a high ash content. Not a problem for your fish, just empty non-calories.