If you're having trouble getting algae in a tank with algae eaters there a couple of explanations to consider.
1. They are eating all the algae. Fish can see algae before we can in many cases.
2. The conditions for algae are not correct.
My advice is to buy sinking algae wafers for you algae eaters. Drop them in a couple hours before you turn the lights off. They contain extra vitamins etc. that fish won't get from just eating algae. Don't leave the algae disks in for more than and hour and remove what's left over, otherwise you'll begin polluting your tank water.
There are a variety of algae eating fish including Rabbit fish and Surgeon fish
Ciguatera Fish Poisoning is a food poisoning caused by eating a certain fish, a marine finfish (e.g. barracuda), that has eaten certain algae. The algae make a toxin that is not so harmful for the fish, but it is to humans.
I guess you are asking about "Algae eating fish" If so, then there are so many different species of fish that eat algae that it is impossible to advise you on their colouring. You will need to be more specific.
Most fish and shrimps will eat some forms of algae.
Ciguatera Fish Poisoning is a food poisoning caused by eating a certain fish, a marine finfish (e.g. barracuda), that has eaten certain algae. The algae make a toxin that is not so harmful for the fish, but it is to humans.
Nothing because no matter. What fish you have in there all algae fish is vegetarian so you don't have to worry about your algae fish eating others.
Algae eating fish include: bottom dwellers such as loaches, cat fish and plecs and many marine and fresh water tropical fish such as plecostomus fish.
Small algae eating fish with what appears to have red and silver stripes resembling the flag for which it gets its name.
Butterfly fish eat tiny shrimp, worms, and algae. They are also known for eating sea anemones.
An algae eating species of any type isn't capable of eating all the algae in the tank. Your going to have to clean the tank yourself. The algae eater will from then on keep the algae levels in your tank down, but not totally.
algae fish you algae fish you
Algae eating fish are not poisonous to people. However, even the largest varieties do not get very big, so they are not really commonly eaten by humans.