The family resemblance

Groups, complexes & careful distinctions.

Useful ways to navigate a diverse genus. Not a substitute for identifying the fish in front of you.

A working map of the genus

Specialists and aquarists use lineages, groups and complexes to organize the diversity of Apistogramma. These informal systems can differ between authors and change as new evidence appears. They are not interchangeable with formal taxonomic ranks. We use selected group labels as navigation aids and state the limits of each hub.

Start with the published profiles

The two hubs below collect substantive profiles already in this guide. They do not list every possible member of a group. A genus-wide registry can hold a name before the editorial work needed for a public profile is complete; we do not create empty pages merely to fill a classification tree.

What a group cannot tell you

Related appearance does not guarantee the same water requirements, temperament or reproductive behavior. Nor does group membership mean two fish should live or breed together. Read the individual species notes, obtain origin information and keep uncertain identifications provisional. The Finder evaluates each published species separately.

How this collection grows

The initial name registry is a dated FishBase snapshot of 94 names, checked on 24 September 2026. It is a foundation for research, not a promise that taxonomic consensus is fixed. New profiles require substantive identification, care, habitat, breeding and source information before publication. Trade forms remain aliases, not automatic species entries.

Classification references

FishBase genus registry