Hello guest! Are you an Apistogramma enthusiast? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Apisto enthusiasts to meet online. Once you join you'll be able to post messages, upload pictures of your fish and tanks and have a great time with other Apisto enthusiasts. Sign up today!
Bloodworms are often bad quality, at least here in Europe you won't find many that feed them to their fish. What exactly causes the frequent losses in dwarf cichlids after feeding those is still not completely clear. Theories include allergens, contaminants, protein poisoning and others. None have been fully disproven yet. There are some that feed them without problems, you will likely find more people that can account losses to them without a doubt. (including me)
Tubifex are actual worms. They can carry diseases if fed live and be contaminated with pollutants if collected in the wild. Store bought frozen worms are usually safe, live ones always bear a slight risk.
Neither are staples. The mosquito larvae contain a too high percentage of protein in the protein/fat ratio, tubifex are packed with fat. Occasional feedings of the worms are ok. If you can establish a population in your tank they are a good long term food source.