[Hobbes1911]

I was wondering what the best treatment for internal parasites is? I have an Ameca splendens that is showing a hollow/sunken in belly and stringy/white feces. I feed flakes (tetra) frozen brine and frozen blood worms. Any help is appreciated.

 

[32Bit_Fish]

You can treat the fish with Metronidazole. Here is the link to the med. I've used this med many times on my discus. It is very effective.
http://nationalfishpharm.com/products3.html

You can feed the fish with medicated food if the fish is still eating. The link is to flake food that contain Metronidazole.
http://www.kensfish.com/aquarium-supplies/fish-food-feeders/kens-premium-metronidazole-garlic-flake.html

 

[mistergreen]

Get API general Cure. It has metro and prazi. Good for a broad internal parasite cure.

 

[lauraleellbp]

http://angelsplus.com/FlakeMedicated.htm is another option for you.

However- I think I'd probably lean towards dosing the tank rather than medicated foods at this point since the shrunken belly indicates either that the fish is no longer eating or is experiencing some major digestive problems.