Order Perciformes
Suborder Anabantoidei
Genus Sandelia.
— Eastern Cape rocky — Sandelia bainsii [Castelnau, 1861]. Synonyms: Ctenopoma microlepidotum; Anabas, Spirobranchus bainsii. (English: Eastern Cape Rocky, Rocky Kurper). Southern coast of Africa. 25 cm. Has a large mouth with sharp, conical teeth. Olive or gray-brown in color with scattered spots. Males have a darker and brighter coloration, grow faster, live longer, and reach larger sizes than females. These fish are darker than S. capensis, have smaller spots, and a sharper snout. Juveniles are gray-yellow with 9-10 dark vertical bars.
Aquarium from 500 liters. Keep only in a species aquarium. A predatory, undemanding fish that stands in the water current, waiting for prey to appear. Substrate of sandy bottom with smooth stones of various sizes scattered around. The water flow from a powerful filter should be directed from one end of the aquarium to the other. In nature, it feeds on small fish, aquatic invertebrates, and even crabs. Fortunately, in the aquarium, it feeds on meaty foods such as bloodworms, shrimp, mussels, and earthworms. They mature in the second year of life. pH 7-8; dH 10-30°; T 18-22°C.
— Cape kurper — Sandelia capensis [Cuvier & Valenciennes, 1831]. Synonyms: Sandelia vicina, vicinus, Spirobranchus capensis, Anabas capensis, vicinus. (English: Cape Kurper). South Africa: Langevlei, Elands, Katmoos, Keqa, and Gourits rivers. 14-21 cm. Olive-brown with dark spots and dots, fins are dark. Males darken during the spawning period. Aquarium from 250 liters, with twisted roots, branches, stones, and a layer of floating vegetation on the surface. Substrate of sandy bottom with smooth stones of various sizes scattered around. Best kept in a species aquarium. Aggressive, keep with fish of the same size. In nature, it feeds on small fish and aquatic invertebrates. They mature in 12 months, reaching a length of at least 5 cm. pH 6.5-7.2; dH 5-15°; T 18-22°C.
Ctenopoma acutirostre, Ctenopoma kingsleyae.
Family Anabantidae, Anabas testudineus. 
