They eat algae.
No. Plecos are classified as herbivores or plant eaters. They are also bottom feeders.
a catfish will eat any fish that is 3/4 its size.
yes
Yes, it can. Oscars do not discriminate. They have notoriously large appetites, and if it fits in its mouth, it will eat it. This can be dangerous for both parties involved, as the spines on plecos can kill an Oscar while it is eating.
no
no plecos will die
Sliced Cucumbers are a delicacy to most algae eating bottom feeder fish! Just attach something to it so it will sink. :)
Many fish eat algae, it depends on which type of algae. But the fish that do eat algae are catfish, red tailed fish, Florida flag fish, and plecos.
Yes they are good as a treat but Plecos are algae eaters. Specialised food is available for algae eaters at good pet/fish shops
First: a "janitor fish" is what Americans call a pleco. Second: yes, you can keep a Betta (fighting fish) and a pleco (janitor fish) in the same aquarium. Plecos are only aggressive to other plecos, so your pleco won't eat the betta. The two fish live in different parts of the aquarium--plecos at the bottom like most catfishes, bettas at the top because they're airbreathers. A betta has the common sense not to mess with a fish as big as a pleco--and it wouldn't matter anyway because plecos are armored fishes. Plus, bettas love to eat snails so they are a good addition to your tank maintenance team. Now! This is the problem: Plecostomus catfishes get huge--if your fish isn't a foot long two years after you get it, you're not feeding it enough. (Plecos eat things like zucchini pieces that you weight down so they sink.) It is a fish that needs AT LEAST a 55-gallon tank to live and be happy. If you've got a small tank like a 10 or a 20 gallon (40 or 80 litres) I would get either Ancistrus catfish (like plecos but much smaller), Corydoras catfish or upside-down catfish.
Guppies do eat algae. However, if you only feed it fish feed, then it will not eat the algae because it is so used to the fish feed...
Yes they do, in addition to algae and fish food that had fallen to the bottom, they also like raw zucchini, both the meaty part and the skin, and will munch on other veggies that you feed your fish.