texas ID
- Thread starter bigriver
- Start date
from : http://www.cichlidae.com/article.php?id=48
by Paul V. Loiselle
Two distinctively colored cichlids have been called by the name H. cyanoguttatus in the aquarium literature. The fish best known to American aquarists and the subject of this article are descended from breeding stock collected in the lower Rio Grande. They may with absolute propriety be referred to as H. cyanoguttatus, for the type locality of this species is Brownsville, Texas, at the mouth of the Rio Grande (Baird and Girard, 1854). The vernacular names of Texas cichlid and Rio Grande perch, bestowed upon this species by sport fishermen and aquarists are at best somewhat misleading. While native to the Rio Grande, this fish is not a true perch, and the greater portion of its range lies in northern Mexico, not Texas.
Herichthys cyanoguttatus was originally restricted to the southern half of the Rio Grande in the United States. Physiological limitations apparently restricted its expansion into the northern reaches of the Rio Grande and its major American tributary, the Pecos River. Clark Hubbs (1951) found that this species was incapable of tolerating temperatures below 14°C. for any length of time. Expansion eastward into waters warm enough to sustain persistent populations was blocked by physiographic barriers that have been surmounted through human intervention. The Texas cichlid is now widely established in the Guadalupe River basin and in the Edwards Plateau region of central Texas (Brown 1953). The prevalence of constant temperature spring flows in this area affords H. cyanoguttatus the winter refuge necessary for the maintenance of a permanent presence in the area. Feral populations of the Texas cichlid have also been reported from central Florida. These are presumably the descendants of fish farm escapees. See Birkenhead (1978) for a map of this species' distribution in the United States.
by Paul V. Loiselle
Two distinctively colored cichlids have been called by the name H. cyanoguttatus in the aquarium literature. The fish best known to American aquarists and the subject of this article are descended from breeding stock collected in the lower Rio Grande. They may with absolute propriety be referred to as H. cyanoguttatus, for the type locality of this species is Brownsville, Texas, at the mouth of the Rio Grande (Baird and Girard, 1854). The vernacular names of Texas cichlid and Rio Grande perch, bestowed upon this species by sport fishermen and aquarists are at best somewhat misleading. While native to the Rio Grande, this fish is not a true perch, and the greater portion of its range lies in northern Mexico, not Texas.
Herichthys cyanoguttatus was originally restricted to the southern half of the Rio Grande in the United States. Physiological limitations apparently restricted its expansion into the northern reaches of the Rio Grande and its major American tributary, the Pecos River. Clark Hubbs (1951) found that this species was incapable of tolerating temperatures below 14°C. for any length of time. Expansion eastward into waters warm enough to sustain persistent populations was blocked by physiographic barriers that have been surmounted through human intervention. The Texas cichlid is now widely established in the Guadalupe River basin and in the Edwards Plateau region of central Texas (Brown 1953). The prevalence of constant temperature spring flows in this area affords H. cyanoguttatus the winter refuge necessary for the maintenance of a permanent presence in the area. Feral populations of the Texas cichlid have also been reported from central Florida. These are presumably the descendants of fish farm escapees. See Birkenhead (1978) for a map of this species' distribution in the United States.
no problem. keep in mind, that article was written in 1982. While mostly still relevant, some of the collection locales and natural (feral?) hybridizations probably need some updates.
