Amazonichthys is a small genus of characins (the tetra family and its relatives) confined to the Amazon basin in Brazil. The three species in the atlas are tiny, running only 1 in, and all three currently carry a Not Evaluated IUCN status - a sign of how recently the genus has been recognized and how little targeted survey work has reached these small-bodied Amazonian fishes. Like many diminutive Amazon characins, they likely inhabit blackwater or clearwater tributary habitat typical of the region, though detailed habitat and diet data for the genus remain sparse.
None of the three species - Amazonichthys camelierae, A. lindeae, or A. lu - has an established presence in the aquarium hobby, and no common names have caught on in trade. Genera this small and this recently carved out of the Amazon's characin diversity tend to stay in the domain of taxonomists and regional ichthyological surveys rather than fishkeepers; there is no CARES conservation-breeding program tracking any of the three, and with every species still Not Evaluated, even the basic question of conservation risk is unanswered for now.