Market tilapia is cheaper than frozen at the grocery store I use. However, I cannot go through a pound before i need to freeze the tilapia. Ive thought about buying less than a pound, but i dont feel like going to the store twice a week to buy fresh food. I also like the added convenience of individually wrapped filets to avoid freezer burn so i pay the extra dollar.
As for the regurgitation problem, I would treat for internal parasites/bacterial infections and fast. Bichirs can go awhile and not eat. If that doesnt work i would then try a different food. Perhaps try another brand of tilapia? I dont think it has anything to do with the bichir not liking the food, but the problem may be an internal problem that doesnt allow it to digest the food. If its blockage like Dr. B said the best course of action would be to fast and hope for the best. The last time I had blockage I didnt have any luck and my bichir ended up dying. Good luck.
