Hello , i got 4 tiger barbs (gonna add 2 more soon) 2 corries , a platty and 5 neon tetras.. If i give them flakes they seem didn't like it but when i give them Frozen bloodworm they eat it very fast and like very delicious meal.. I Heard many people said that flakes is good for fishes but my fish seem didn't like it -.- what should i do ? stick with giving them Frozen bloodworm ? They might get fat isn't ?