neon puffer is melting away

[newreef]

ive had him for a couple of weeks.the guy at store told me to feed him blood worms.he eats but he keeps geting skinner.know ive noticed him eating red slime algea is that ok?should i get rid of him before he becomes sick or worse dies??

[Ninong]

ive had him for a couple of weeks.the guy at store told me to feed him blood worms.

The guy at the store must specialize in freshwater fish? Bloodworms (mosquito larvae) are not a natural food item for any saltwater fish. Many saltwater fish will eat them, but that shouldn't be their only food.

he eats but he keeps geting skinner.know ive noticed him eating red slime algea is that ok?should i get rid of him before he becomes sick or worse dies??

I'm going to take a wild guess here and assume that a "neon puffer" is actually a longnose toby, probably the Ocellated Toby (Canthigaster solandri), but that's just a guess on my part because I have no clue what a neon puffer is????

Here is something I found for you on C. solandri:

Tobies will eat a wide variety of chopped, fresh seafood, flake foods and frozen preparations. It is very important to feed these fish at least twice a day, especially in tanks that lack plant growth or sessile invertebrates. If fed any less than this, these fishes will loss weight. Tobies do best when housed in a tank that has an abundance of fleshy or filamentous algae, on which they can browse throughout the day. Because they are omnivores, it is important to include sufficient quantities of plant material in their diets, including algae, spinach, dried algae and frozen and/or flake foods formulated for herbivores. Tobies should also be housed in a tank with some hard calcareous decor that they can nip at or the aquarist can add a small piece of live rock now and then for them to chew on. This will help ware down their teeth, which will continue to grow and can get so long that they interfere with their normal feeding behavior.

Here is the rest of the article. Scroll down to the bottom two pictures and see if your fish looks like that???

[newreef]

the second from the bottom is my puffer.thanks for the info.i do feed my fish flake food dried seaweed and other things like formula a in frozen blocks like the bloodworms. but he is not taking the other stuff.my fish are all pretty crazy at feeding time so i dont want to over feed to get him to eat.but he has the opp to eat it floats right in front of him?