Discus
Symphysodon aequifasciatus

General: The Amazonian discus are a peaceful and extremely colorful fish species kept within the hobby. However, the discus can be relatively difficult to maintain. Minor but frequent water changes (10% once per week) should be performed. Also, due to the biological nature of the fish, environmental conditions must be matched within aquaria (Acidic, soft water conditions with minimal current). If these conditions can be maintained, then consider keeping the colorful discus in a planted aquarium. Naturally, discus prefer many of the same environmental conditions that aquatic plant species do.

Dimorphism: It is difficult to determine the gender of discus. In order to determine gender, the pair should be observed while exhibiting reproductive behaviors. The discus depositing eggs will be female, and anyone who attempts to fertilize them will be male. It is common for multiple female discus to deposit eggs simultaneously, without a male to fertilize them.

Fecundity: Discus may produce up to 1,500 eggs per clutch.

Water Chemistry: 79-86° F, KH 1-3, pH 6.1-7.5

Aquarium Diet: Discus will accept brine shrimp, blackworms, carnivore pellets, and specialized flakes.

Compatibility: Discus are typically compatible with Corydoras, and various species of smaller tetra such as the cardinal tetra (Paracheirodon axelrodi).