]> 2008-12-02T18:03:30-06:00 Rummynose Tetra Rummynose Tetra Firehead Tetra NH 0.05 0.038 bleheri Midwater. KW 299.15 295.15 Freshwater 101 Best Tropical Fishes Reference Río Meta Basin Río Negro Basin Colombia South America Native range Hemigrammus Genus Characidae Family Water type Water min temp (K) K Water min temp Water max temp (K) K Water max temp Text credit Swimming level Specific name Minimum aquarium size (m³) m³ Minimum aquarium size Maximum length (m) m Maximum length Image credit Common name Species