Risor
Encyclopedia
Risor is a genus of fish
in the Gobiidae family. It may be monotypic
; even though more than one species
is placed here, the validity of all exceptone is unclear.
Species include:
Fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...
in the Gobiidae family. It may be monotypic
Monotypic
In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...
; even though more than one species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
is placed here, the validity of all exceptone is unclear.
Species include:
- Risor ruber – Smallmouth Goby