Nielsen, Dalton

Dalton Nielsen¬†ichthyologist and aquarist. Author of the definitive book for anyone interested in the small South American annuals such as Campellolebias, Notholebias etc. Titled “Simpsonichthys e Nematolebias” ¬†(in Portuguese language) Programs: Collecting Melanorivulus – Ecology, Reproduction, Habitat & Systematics