Etheostoma cragini és una espècie de peix de la família dels pèrcids i de l'ordre dels perciformes.
Els mascles poden assolir els 6 cm de longitud total.[2]
Es troba a Nord-amèrica: sud-oest de Missouri, nord-oest d'Arkansas, Kansas, Oklahoma i Colorado.[2]
The Arkansas darter (Etheostoma cragini) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the United States where it is found in Kansas, Arkansas, Missouri, Colorado, and Oklahoma.
The Arkansas darter has an olive-brown dorsal surface spotted with fine black markings, and a yellowish-white underside except that in males during the breeding season, the belly turns bright orange. It has a blackish wedge-shaped blotch beneath its eye and there are 12 to 14 dark stripes along the sides.[2] This species reaches a maximum size of 6 cm (2.4 in).[3]
The Arkansas darter, despite its name, is primarily found in Kansas. However, its range encompasses the Arkansas River drainage system and this extends into eastern Colorado, southwestern Missouri, northeastern Arkansas and north-central Oklahoma, as well.[3]
The Arkansas darter moves up and down stream by as much as several kilometers in accordance with varying water flows. It feeds on small insects and their larvae and sometimes consumes plant material such as seeds. It reaches sexual maturity at about a year and spawns during the spring and summer. The eggs are laid in shallow water on gravel bottoms in open areas or among organic debris accumulations.[2]
The IUCN lists the Arkansas darter as being Near Threatened.[1] It has a limited distribution and threats to this species include the lowering of the water level in streams resulting from groundwater pumping in the western part of its range, and potential development pressures in the eastern part. Drought can also cause water levels to fall and runoff from feed lots may cause pollution.[2]
The Arkansas darter (Etheostoma cragini) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the United States where it is found in Kansas, Arkansas, Missouri, Colorado, and Oklahoma.
Etheostoma cragini es una especie de peces de la familia Percidae en el orden de los Perciformes.
Los machos pueden llegar alcanzar los 6 cm de longitud total.[1]
Se encuentran en Norteamérica: suroeste de Misuri, noroeste de Arkansas, Kansas, Oklahoma y Colorado.
Etheostoma cragini Etheostoma generoko animalia da. Arrainen barruko Percidae familian sailkatzen da.
Etheostoma cragini Etheostoma generoko animalia da. Arrainen barruko Percidae familian sailkatzen da.
Etheostoma cragini is een straalvinnige vissensoort uit de familie van de echte baarzen (Percidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1885 door Gilbert.
Bronnen, noten en/of referentiesEtheostoma cragini é uma espécie de peixe da família Percidae.
É endémica dos Estados Unidos da América.[1]
Etheostoma cragini é uma espécie de peixe da família Percidae.
É endémica dos Estados Unidos da América.
Etheostoma cragini là một loài cá thuộc họ Percidae. Nó là loài đặc hữu của Hoa Kỳ.
Loài cá này có màu nâu ô liu ở nửa phía trên và màu trắng vàng ở phía dưới thân. Loài này có kích thước tối đa 6 cm.[2]
Dù tên gọi là cá Arkansas, Kansas là nơi có phạm vi phân bố hàng đầu của loài này. Loài còn phân bố qua miền đông Colorado, tây nam Missouri, đông bắc Arkansas và bắc trung bộ Oklahoma.[2]
阿肯色鏢鱸為輻鰭魚綱鱸形目鱸亞目河鱸科的其中一種,分布於美國阿肯色河流域,體長可達6公分,棲息在植被生長、泥底質的溪流。