By_a_coo wrote:Now I have my only left SAP quarantined. Thirty days had past since I bought it. From the very beginning I made differents deworming methods. I started with Fenbendazole, then I tried levamisole and now I treated with metronidazole.
So far as I know, metronidazole isn't an antihelminth, so won't treat worms. Levamisole, piperazine and praziquantel are often recommended but not particularly reliable. Fenbendazole or flubendazole are rather better. Do remember that it is impossible for the home aquarist to reliable dose any of these medications. I recently discussed antihelminthic medications with a vet for a fish magazine article, and her attitude was that aquarists "get lucky" when their fish recover, even using those brands sold in the US as safe for use in aquaria. Without knowing the mass (weight) of the fish, you can't accurately calculate the dosage, and even then, different fish will need different dosages. But this does all assume your puffer has worms. Most wild fish likely carry some, but without causing any real harm. So unless you're looking at obvious wasting away alongside abdominal swelling, I'm always a bit cautious about the "internal parasitic worm" explanation.
By_a_coo wrote:
My SAP is eating very well but he only eats freezed dried bloodworms. I was thinking of moving him to the main tank and see if he start to hunt for snails.
Bloodworms aren't particularly nutritious when fresh or frozen, and freeze-dried ones even more useless. By all means offer them occasionally, but bear in mind heavy use of freeze-dried foods does tend to go along with constipation. Concentrate on offering a more varied diet. My SAPs enjoy prawns, mussels, squid, brine shrimp, earthworms, woodlice, even slices of white fish and the odd Hikari Cichlid Gold pellet. Variety is the key.
By_a_coo wrote:
He is eating two times a day, he gets rounded belly and in the next day he looks slim, not raw-boned.
I wouldn't be keeping a single specimen anyway, since they're much happier in groups. They are calmer, so less likely to burn off calories swimming about wildly. They are relatively slow growing fish, so don't expect sudden changes in size or weight.
Cheers, Neale