@Benayounn: Same as above, Chinese algae eaters aren't suitable for a coldwater tank setup. They will be nipping your Goldfish' fins because they look so beautiful and attractive to them.
They like consistency, so heavy water changes can really affect them.
When water temperature reach 41 degrees Fahrenheit or lower, even cold-water fish won't eat much anyway. When water gets to these temperatures, cold-water fish go into a partial hibernation mode until spring. When the water freezes over and the fish aren't hibernating, they will occasionally nibble on algae to provide for themselves. The fish won't need more than that.
Are there any cold-water Algae Eaters
Just brought my goldfish in from the pond for the winter. Are there any kind of algae eaters, bottom feeders that I can get for a coldwater tank? Water temp around 72F and no heater. I have a 13 small goldfish and about 5 plants.
Does anyone know of a better fish for my un-heated Goldfish tank?
Most sucker fish, or algae eaters, are tropical or semitropical fish from South America. They are not well-adapted to extremely cold water, which is the perfect environment for koi. A few varieties of sucker fish can survive mild winter weather changes, but none will withstand below-freezing temperatures. This means that typical sucker fish are ideal for outdoor ponds only during warm months.Apart from plecos, I would also recommend a few nerite snails. I wouldn’t recommend any other fish algae eater, because they would most likely get eaten and are mostly warm water fish while goldfish are cold-water fish.Hillstream loach species are frequently sold as algae eaters for coldwater or temperate tanks. They are also known as Hong Kong plecs, butterfly plecs and Borneo suckerfish among other common names. These fish have very specific requirements and are best suited to set ups with very high flow. There is an excellent article on which gives some great information on the requirements of these fish – .I have read this and am intrigued by these pretty fish. My question is this: several comments have been asked and addressed about cold water. How about WARM water? I live in the Houston area so the water in the hot summer can get quite warm. My pond is a converted non working in-ground hot tub. It is six feet across, with the benches for sitting, and four feet deep in the very center, where your feet go. I have 14 goldfish, and two channel catfish, along with countless gambusia. I would like an algae eater of some sort. Think the water will stay cool enough in the deep?