Carnegiella marthae (Black Winged Hatchetfish)
Photo by Tsunamicarlos 
Family: Gasteropelecidae
Scientific name: Carnegiella marthae
Common name: Black Winged Hatchetfish
Synonyms: Black-winged Hatchetfish, Blackwinged Hatchetfish, Blackwing Hatchetfish
Origin: South America; Slow flowing rainforest streams and pools. Negro and upper Orinoco River basins.
Adult size: 3.5 cm
Lifespan: 5 years
Sex: During spawning the females are plumper and white eggs may be seen inside the body. Otherwise alike.
Minimum aquarium size: 60cm
Aquarium decor: Plants
Temperature: 23-27°C
Water chemistry: pH 5.5-6.5. Hardness up to 4°dGH
Diet: Carnivore; mosquito larvae, flake
Swimming level: Top
Compatibility: Peaceful schooling fish, best kept in groups of six or more. Avoid mixing with aggressive species.
Comments: An aquarium lid is essential as hatchetfish often jump and fly for up to 1.5m. Not the easiest fish to keep, they are delicate and extremely sensitive to water conditions.
