Characidae: Tetras and Neotropical Characins

Paracheirodon innesi — Neon Tetra

Learn neon tetra care for Paracheirodon innesi: tank size, school of 10+, diet, and lifespan. Keep your fish vibrant and healthy.

Paracheirodon axelrodi — Cardinal Tetra

Learn cardinal tetra care for Paracheirodon axelrodi: full red stripe, 2 inches, larger than neon tetras. Tank setup, diet, and breeding tips.

Hyphessobrycon amandae — Ember Tetra

Learn ember tetra care for your nano tank. This tiny orange fish (0.8 in) is peaceful, easy to keep, and perfect for planted aquariums. Get tips now.

Hasemania nana — Silvertip Tetra

Discover the silvertip tetra, Hasemania nana: a small, lively characin perfect for freshwater aquariums. Learn its care, tank setup, tank mates, and breeding ne

Hemigrammus bleheri — Rummy Nose Tetra

Hemigrammus bleheri, the rummy nose tetra, from the Rio Negro basin. Covers its water-quality sensitivity, shoaling requirements and aquarium husbandry.

Carnegiella strigata — Marbled Hatchetfish

Carnegiella strigata, the marbled hatchetfish, a surface-dwelling characin from the Amazon basin. Covers its morphology, jump behaviour and aquarium husbandry.

Nannostomus beckfordi — Golden Pencilfish

Discover the golden pencilfish, Nannostomus beckfordi: a peaceful, beginner-friendly characin with expert care tips, tank setup, diet, and breeding advice.

Gymnocorymbus ternetzi — Black Skirt Tetra

Discover the black skirt tetra (Gymnocorymbus ternetzi), a hardy characin first described in 1924. Learn its origins, care needs, tank setup, and ideal tank mat

Hemigrammus rhodostomus — Firehead Tetra

Discover the firehead tetra (Hemigrammus rhodostomus), a peaceful characin described in 1924. Learn its care, tank setup, diet, and breeding needs.

Hemigrammus erythrozonus — Glowlight Tetra

Discover the glowlight tetra, Hemigrammus erythrozonus: a hardy, peaceful characin ideal for planted community tanks. Learn its care, tank mates, diet, and bree

Megalancistrus parananus — Sailfin Pleco

Discover the Megalancistrus parananus, or Sailfin Pleco: a large, robust loricariid catfish from the Paraná River basin. Learn its history, care, and identifica

Moenkhausia sanctaefilomenae — Yellow-Belly Tetra

Moenkhausia sanctaefilomenae, the yellow-belly tetra from the Paraguay and Parana basins. Covers its characin biology, shoaling needs and aquarium care.

Hyphessobrycon herbertaxelrodi — Black Neon Tetra

Hyphessobrycon herbertaxelrodi, the black neon tetra from the Paraguay basin. Covers its habitat, shoaling requirements and peaceful community husbandry.