Tag Archive: Live bearer


TAXONOMY
Kingdom: Animalia
Phylum:  Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Perciformes (Perch-likes)
Suborder: Labroidei
Family: Embiotocidae (surfperches)

Genus/species: Rhacochilus vacca 

GENERAL CHARACTERISTICS: Above, dark gray or brown pigment with a silvery luster which dominates the color on sides and belly; darker blotches on the back and sides, dark vertical bars on juveniles; fins dusky deeply forked caudal fin.

Length 25–30 cm (10-12 inches); maximum 42 cm (16.5 in).

 

DISTRIBUTION/HABITAT: Alaska to north central Baja California, Mexico.  Rocky shores, pilings, kelp beds,  underwater structures to 46 m (150 ft).        

 PilePerchIMG_0091

DIET IN THE WILD: R. vacca feed on hard-shelled mollusks, crabs and barnacles. 

REPRODUCTION: Fertilization is internal. Viviparous (live bearer). Fecundity increases with age, averaging from 11–60 young.

LONGEVITY: 7–10 years.

CONSERVATION: Least Concern, the distribution of this species may coincide with a number of designated marine protected areas.

REMARKS: Specialized pharyngeal dentition enable the pile perch to crush hard shells persuading some ichthyologists to place the species in its own genus (Damalichthys). 

References

Ron’s flickr http://www.flickr.com/photos/cas_docents/7800199372/in/set-72157608348783942/

California Academy of Sciences Steinhart Aquarium California Rocky Coast 2017

fishbase www.fishbase.org/summary/3640

Ron’s WordPress shortlink  http://wp.me/p1DZ4b-Co

eol eol.org/pages/205598/details

IUCN Least Concern www.iucnredlist.org/details/155179/0

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Cyprinodontiformes (Rivulines, killifishes and live bearers)                                                                                        Family: Poeciliidae

Genus/species: Alafro cultratus

Alafro cultratus16167676782_36fa409f32_k

GENERAL CHARACTERISTICS: Max length : 7.5 cm.

DISTRIBUTION/HABITAT: Central America: Costa Rica, Panama and Nicaragua. Found in rapidly flowing rainforest streams.

DIET IN THE WILD: Insectivorous, aquatic and terrestrial insects.

REPRODUCTION: Internal live bearers. Gestation lasts for about 24 days. Produces 10 to 30, rarely more, young.

CONSERVATION: IUCN AND CITIES Not Evaluated

References

fishbase www.fishbase.gr/summary/46449

Encyclopedia of Life eol.org/pages/1157656/hierarchy_entries/44712641/details

Ron’s flickr https://www.flickr.com/photos/cas_docents/16167676782/in/set-72157620708938680

Ron’s WordPress Shortlink  http://wp.me/p1DZ4b-1tM

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