1 doctor agreed: 1  Lower side: Usually when people have left lower side body/ abdominal aches, i think of the following, the ovaries, and the sigmoid colon usually are the common things. 2  Muscular pain: It could be musculoskeletal pain but the best way to determine this is with a good physical exam.
Fish are only one type of animal that eats algae. There are many algae-eating snails, shrimp and clams that can be interesting additions to your tank. Florida flagfish (Jordanella floridae) are great additions to the aquarium that has a brush or beard algae problem.
1) Wanting to be fed. 2) Pooing. If you can see your fish through the glass then there is probably not enough algae to feed the algae eater. Even when they do eat your algae they still poo and contribute to the bioload on the tank. If you can find out exactly what kind of fish it is we could help with more advice.