The Siamese Algae Eater (Crossocheilus siamensis) is a longtime favorite in the aquarium hobby due to its active nature and its voracious appetite for various types of nuisance algae, including pesky black beard algae. It is a mostly herviborous fish that is gregarious as a juvenile, but is shoaling (rather than schooling) as an adult. As it matures, a distinct hierarchy develops within a group of this species, and stress and aggression are likely when the group contains less than 6 specimens.
Voracious algae eater
Will not eat ornamental plants
Generally peaceful disposition with fish and peaceful larger invertebrates
Very active and noticeable fish in any aquarium
Very hardy
Temperature: 72° - 79° F (22° - 26° C)
pH: 6.5 - 7.5
KH: 4 - 15 dKH
Minimum tank size: 50 gallons