Etheostoma fonticola és una espècie de peix de la família dels pèrcids i de l'ordre dels perciformes.[3]
Té lloc durant tot l'any a intervals de 33 dies i la posta és abandonada al fons aquàtic sense protecció.[7][8][9]
Menja bàsicament cladòcers, copèpodes, amfípodes i insectes aquàtics.[10]
És d'aigua dolça, bentopelàgic i de clima subtropical (31°N-29°N).[4]
Es troba a Nord-amèrica: Texas, incloent-hi la conca del riu Guadalupe.[11][12][13][14][15][16][17][18][19][20][4][21]
Etheostoma fonticola és una espècie de peix de la família dels pèrcids i de l'ordre dels perciformes.
The fountain darter (Etheostoma fonticola) 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 found in the headwaters of only two rivers in Texas, United States: the Comal River and the San Marcos River. It is generally smaller than 3 cm (1.2 in) long and feeds on small invertebrates. It is a federally listed endangered species of the United States[2][3] and is also listed as endangered by the IUCN.[1]
The fountain darter is known from only two locations, primarily the headwaters of the spring-fed San Marcos River,[1] having been observed as far as 1.25 miles downstream, as well as the upper reaches of the Comal River in central Texas.[1] Its geographic isolation is reflective of its incredibly specific habitation preferences which demand conditions which can only be found in these two Texas river headwaters. In these unique locations they can be observed in open areas created by a medium current at depths of 3–5 feet near the outlets of contributing spring heads with rates of flow low enough to retain a layer of percolating sand. These springs can be found adjacent to the main springs that deliver the tremendous volumes of cool, perfectly clear water that forms each river. They require a stable water temperature, within the low 70s, year round which the springs provide.
The population in the Comal River was extirpated due to spring failure in the 1950s. The current population there is the result of reintroduction in the early 1970s.[1]
The fountain darter feeds on small invertebrates. It breeds all year round and the eggs are deposited on dead leaves, stems, rocks, algae or other objects. This fish lives for one to two years.[5]
They primarily occupy the sandy tops of lesser flowing springheads or flat rock surfaces absent of rooted plants, or decaying plant matter and spawn within the vibrantly abundant and healthy vegetation that thrives in these unique, pristine, springfed river systems. An extra worry for the future of fountain darters is the parasitic, non-native trematode (Centrocestus formosanus), whose impact on the darter population is not yet known. As of 2011, only the Comal population is seriously affected by the parasite.[1] The National Fish Hatchery and Technology Center in San Marcos keeps a reserve population of 500 adults as a hedge against a man-made or natural event wiping out the fish in the wild. The IUCN rates this species as "Endangered".[1] Conservation efforts include encouraging people to use less water in order to maximise water flow from the springs and to keep the rivers free from trash.[5] The continued survival of wild fountain darter is dependent upon the integrity of the subterranean Edwards Aquifer.[1]
The fountain darter (Etheostoma fonticola) 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 found in the headwaters of only two rivers in Texas, United States: the Comal River and the San Marcos River. It is generally smaller than 3 cm (1.2 in) long and feeds on small invertebrates. It is a federally listed endangered species of the United States and is also listed as endangered by the IUCN.
Etheostoma fonticola es una especie de peces de la familia Percidae en el orden de los Perciformes.
Los machos pueden llegar alcanzar los 4,3 cm de longitud total.[2]
Se encuentran en Norteamérica: Texas.
Etheostoma fonticola Etheostoma generoko animalia da. Arrainen barruko Percidae familian sailkatzen da.
Etheostoma fonticola Etheostoma generoko animalia da. Arrainen barruko Percidae familian sailkatzen da.
Etheostoma fonticola is een straalvinnige vissensoort uit de familie van de echte baarzen (Percidae).[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1886 door Jordan & Gilbert.
Bronnen, noten en/of referenties
泉鏢鱸為輻鰭魚綱鱸形目鱸亞目河鱸科的其中一種，被IUCN列為次級保育類動物，分布於美國德克薩斯州的Guadalupe河流域，體長可達4.3公分，棲息在植被生長的溪流、運河，屬肉食性，以水生昆蟲、橈腳類等為食。
这是一篇與鱸形目相關的小作品。你可以通过编辑或修订扩充其内容。 
