| Dallia pectoralis Bean, 1880 | ||||
| Family: | Umbridae (Mudminnows) | ( not available ) | ||
| Order: | Esociformes | |||
| Class: | Teleostei | |||
| English name: | Alaska blackfish | |||
| Distribution: | North America: Alaska from Colville River delta south to central Alaska Peninsula near Chignik; upstream in Yukon-Tanana drainage to near Fairbanks. Also Bering Sea islands and northeastern Siberia, Russia. | |||
| Adult biology: | Usually found in heavily vegetated swamps and ponds; occasionally in medium to large rivers and lakes with abundant vegetation (Ref. 5723). Migrations appear to be limited to inshore or upstream movements to spawning grounds in the spring and (presumably) reverse migrations to deeper water in the fall (Ref. 27547). Oviparous, batch spawner (Ref. 205). Known for their tolerance to cold water: survives exposures to -20°C for up to 40 minutes, and can survive for a few days after complete freezing of parts of the body, even the head (Ref. 28673, 28674). Uses its esophagus as auxiliary breathing organ (Ref. 27797). | |||
| Diagnosis: | After 10 days, young measures 9 mm long and the yolk sac have been absorbed. At 22 days, it measures 12 mm and showing adult characteristics.. See also LARVAE table. | |||
| Climate Zone: | boreal; 4 - 14°C; 72°N - 55°N | |||
| Main Ref: | Morrow, J.E.. 1980. (Ref. 27547) | |||
| More information: | Collaborators | Common names | Countries | Egg dev. | Eggs | FAO areas | Genetics | Introductions | Larvae | Maturity | References | Reproduction | Spawning | Fecundity | Synonyms | | |||
| Internet sources: |
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| Modified by: Luna, Susan M. |
Entered by: Garilao, Cristina V. |
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