Supriya Ghosh (Editor)

California roach

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Kingdom
  
Animalia

Order
  
Cypriniformes

Scientific name
  
Hesperoleucus symmetricus

Rank
  
Species

Phylum
  
Chordata

Family
  
Cyprinidae

Higher classification
  
Hesperoleucus

California roach calfishucdavisedufiles79604displayjpg

Genus
  
Hesperoleucus Snyder, 1913

Similar
  
Sacramento pikeminnow, Mylopharodon conocephalus, Sacramento blackfish, Lavinia exilicauda, Prickly sculpin

Fishing planet game how to catch the california roach guide


The California roach (Hesperoleucus symmetricus) is a cyprinid fish native to western North America and abundant in the intermittent streams throughout central California. It is the sole member of its genus.

Contents

This fish is of a relatively chunky body shape, with a largish head and large eyes, but a small mouth oriented downwards. Its color is a darker grayish-bluish above, and a dull silver underneath. During the breeding season, red-orange patches appear on the chin, operculum, and at the bases of pectoral, pelvic, and anal fins. The smallish dorsal fin has 7-10 rays, while the anal fin has 6-9 rays. They never get large, the maximum known being about 11 cm.

Mainly a bottom feeder, filamentous algae are the main part of its diet, followed by aquatic insects and crustaceans. It will also opportunistically eat insects and crustaceans at the surface. In turn, it is eaten by other fish, in particular green sunfish.

Spawning occurs mainly from March through June. They move into shallow, flowing water, over bottoms covered with small rocks, and form up into schools. Females lay a few eggs at a time, eventually putting down from 250 to 900 eggs each. The adhesive eggs are laid in crevices, where they stick to the rocks, and then the males fertilize them. The fry continue to dwell in the crevices until they are strong enough to swim actively.

California roaches seem to be a resilient species that takes advantage of the intermittent waters of central California under conditions too difficult for other fishes. As the springtime streams dry up in summer, roaches accumulate in large number in pools, which may be alkaline, hot (up to 95 °F), and low in oxygen. They also seem to cope well with sewage-polluted waters.

Mainly found in the Sacramento River/San Joaquin River drainage, including Pit River and Goose Lake, they are known from many of the small coastal streams (Russian River, Pajaro River, Salinas River, Adobe Creek, Permanente Creek, etc.). Populations in southern California and in Warner Valley, Oregon, may be introductions.

Microfishing california roach minnow


References

California roach Wikipedia