won't eat

Hi, I am new to the forum so bare with me if I am asking dumb questions. I have two spotted gars (both 30cm) in a 180 gallon tank, water parameters are fine and both have been eating well. I have had them for nearly a year and they never had problem eating. About 4 weeks ago, suddenly they...

Help..i just bought my wolf fish (hoplias Mala) 3 weeks ago about 14cm. since I bought, my wolf fish wont eat I tried Shrimp, Gold Fish, Crayfish, Pinkie, and bloodworm also dim the light still wont work. my temp is 27 Celcius..PH 7... my tank 60cm (Long) x 33cm (Width) x 50cm (tall) and water...