My fish not eating

[nutto]

I have 12 gallon nano tank just finished cycling. I have one clown fish and 2 demsels and one bta. The tank was set up about 3 weeks ago. Everything was fine until 3 days ago, 2 demsels are not eating. They used to eat a lot. Now they tried to eat aggressively but then spit the food out. I feed them Spectra Max flake food. Has anybody experienced like this or got any idea. Please help, I don't want my fish die starving. Thank you.

 

[discus010]

Maybe they do not like eating flake food. Try giving them frozen food such as brine shrimp, mysis, or formula one.

 

[kalare]

whenever anything in any tank starts going the way you don't want it, always check the water with every test kit you have...

 

[buldog]

Water parameters

Water parameters

What are your water parameters? Try to feed New Life Spectrum pellets. They are suppose to be the best dried food! The Thera A formula even has garlic.