How to Breed Siamese Algae Eaters

Set up a tank of at least 30 gallons for a pair of fish. Since Siamese algae eaters (SAEs) are difficult to sex and seem happier in schools, a tank size of around 100 gallons (to house four to six fish) would arguably increase the odds of breeding success. SAEs are also very sensitive to water conditions, and larger tanks are generally less likely to have major fluctuations over time.

Densely plant the tank, preferably with the use of a nutrient-rich substrate. Top rough or rocky substrate with a half-inch layer of sand to prevent your fish from scratching their bellies.

Hook up a high-capacity filter and consider adding a power head (designed largely for saltwater tanks) to one corner of the tank. SAEs inhabit streams and rivers in addition to flooded forest areas in the wild, and keeping part of the tank water flowing at higher speeds may help replicate natural conditions.

Maintain a pH level between 6.0 and 8.0. Hard water can be buffered down with the addition of a little peat moss in the filter bag (add new peat at each water change).

Keep tank temperatures between 75 and 79 degrees Fahrenheit.

Make sure that the tank has had plenty of time to finish cycling before adding any fish. SAEs do not respond well to nitrogen fluctuations that occur in newly established tanks.

Purchase only true Siamese algae eaters. Several other species of fish, including the Chinese algae eater and flying fox, are commonly mislabeled as Siamese algae eaters. Not only do these fish not consume the hair or red algae SAEs are famous for eating, but they are much more solitary and may react aggressively toward their own species. Siamese algae eaters can be identified by their duller colors, transparent fins and single set of mouth barbels (all of the other fish have two sets).

Acclimate the new fish very slowly to your tank. A drip method (where your tank water is dripped slowly into a bucket containing the fish over several hours) works best and prevents unnecessary contamination with pet store tank water, as the fish can be netted out rather than dumped into the new tank.

Feed a varied diet of algae pellets and fresh blanched vegetables in addition to allowing the fish to graze naturally.

Maintain high water quality with frequent, small water changes.