Elassoma

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: ParaHoxozoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Olfactores
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Eupercaria
Ordo: Centrarchiformes
Subordo: Centrarchoidei

Familia: Elassomatidae
Genus: Elassoma
Species (7): E. alabamae – E. boehlkei – E. evergladei – E. gilberti – E. okatie – E. okefenokee – E. zonatum
Name

Elassoma Jordan, 1877
References
Links

Elassoma species list in FishBase,
Froese, R. & Pauly, D. (eds.) 2024. FishBase. World Wide Web electronic publication, www.fishbase.org, version 02/2024.
Elassoma and its species (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2024. Catalog of Fishes electronic version.
ITIS

Vernacular names
English: Pygmy Sunfishes

Elassoma is a genus of freshwater fish, the only member of subfamily Elassomatinae of the sunfish family Centrarchidae in the order Perciformes.[1] It is sometimes classified as a separate family, the Elassomatidae, in a monotypic suborder, Elassomatoidei, in Perciformes. The type species is E. zonatum, the banded pygmy sunfish. The Elassomatinae are known collectively as pygmy sunfishes, but are considered by some authorities not to be true sunfishes, which are members of the family Centrarchidae. Some researchers believe they are related to sticklebacks and pipefishes (order Syngnathiformes) rather than Perciformes, though genetic research strongly implies a close relationship with the centrarchids.[2] Currently the Integrated Taxonomic Information System classifies them in the family Elassomatidae rather than Centrarchidae.[3]

The pygmy sunfishes grow to a maximum overall length of 3 to 4 cm (1 to 1.5 in). They occur mostly in temperate and subtropical swamps, marshes, and other shallow, slow-moving, and heavily vegetated waters, across an area of the American South stretching from the Coastal Plain of North Carolina to central Florida, west along the Gulf Coast to eastern Texas, and north up the Mississippi River Valley to southern Illinois. The bluebarred, Carolina, and spring pygmy sunfishes have small localized populations and are considered Vulnerable.

The pygmy sunfishes are too small to be game fish, but are relatively popular as aquarium fish because of the males' iridescent colors and fascinating breeding behaviors. Eggs are laid on or beneath dense vegetation, and the male guards the nest area until the fry hatch and scatter. They adapt well to small aquaria and are relatively adaptable to a range of conditions, but seldom take conventional prepared fish foods, instead requiring small live worms, insects, or crustaceans as food.
Etymology

The generic name Elassoma derives from the Greek ελάσσων (elasson) meaning smaller and σώμα (soma) meaning body, in reference to the fishes' diminutive size compared to the typical sunfishes.
Species

The currently recognized species in this genus are:[4]

Elassoma alabamae Mayden, 1993 (spring pygmy sunfish)
Elassoma boehlkei Rohde & R. G. Arndt, 1987 (Carolina pygmy sunfish)
Elassoma evergladei D. S. Jordan, 1884 (Everglades pygmy sunfish)
Elassoma gilberti Snelson, Krabbenhoft & Quattro, 2009 (Gulf Coast pygmy sunfish)
Elassoma okatie Rohde & R. G. Arndt, 1987 (bluebarred pygmy sunfish)
Elassoma okefenokee J. E. Böhlke, 1956 (Okefenokee pygmy sunfish)
Elassoma zonatum D. S. Jordan, 1877 (banded pygmy sunfish)