Ditropichthys storeri
No common name
Collection Details
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Taxonomic Hierarchy
Cetomimidae
Ditropichthys
Ditropichthys storeri
Description
This species account was compiled from
Composite (multiple sources) (McEachran, J.D. and J.D. Fechhelm. Fishes of the Gulf of Mexico. University of Texas Press, Austin.)
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Characters
Moderately deep bodied and compressed posteriorly, with a relatively large head, a pair of thin dermal folds along abdomen, and anal fin lappets. Snout is straight in dorsal profile and moderately acute. Jaw teeth are very small and close-set in irregular diagonal rows. Vomerine tooth patch is elongate and oval shaped. Palatine bears villiform teeth. Ventral midline of gill arches has single moderately long and very broad tooth plate. Eye is very small and lacks lens. Four free gill arches are present; slit is present behind fourth gill arch. First gill arch has club-shaped gill rakers, with 3 or 4 on epibranch and 9 to 11 on lower limb. Head length is 29.1% to 34.9%, snout length is 9.4% to 14.4%, upper jaw length is 19.2% to 23.4%, lower jaw length is 19.8% to 23.3%, body depth is 20.9% to 26.6%, snout to dorsal fin origin is 63.2% to 68.7%, dorsal fin base length is 20.9% to 26.6%, snout to anal fin base is 62.4% to 70.7%, and anal fin base length is 15.1% to 19.8% of SL. Pectoral fin has 17 to 21, dorsal fin has 19 to 22, and anal fin has 15 to 18 rays. Lateral line system on head consists of shallow canals covered with skin pierced by pores. Lateral line on trunk consists of broad tube pierced by 11 to 14 pores without flaps or keels. Vertebrae number 38 to 41.
Color in preservative is dark brown.
Distribution
In the western Atlantic it occurs from New York to northern South America, including the Gulf of Mexico and the Caribbean Sea.
In the Gulf of Mexico it has been captured between 800 and 2,150 m.
Habitat Associations
Mesopelagic and bathypelagic depths. Worldwide in tropical to warm temperate seas.
Biology
Maximum known size is 128 mm SL. Large specimens occur at the lower portion of the depth range, and small specimens occur at the upper portion of the depth range and may make diurnal migrations of up to 650 m.
Juveniles (less than 3.5 cm) were captured in shallower depth range (650-877 m). Larger specimens appear to dwell deeper (Ref. 9791).
IUCN Red List Status: Data Deficient (DD), assessed 2014-07-15. Resilience: Medium (Assuming tmax>3).
Phylogeny and Morphologically Similar Fishes
Distinguished from the other species of the family by the combination of characters described.
References
Goode and Bean 1895
Parr 1934
Harry 1952
Murdy et al. 1983
Paxton 1989
Paxton, J.R. and D.J. Blake (1990) Cetomimidae. p. 607-608. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Parisl. Vol. 2.
Paxton, J.R. (1989) Synopsis of the whalefishes (family Cetomimidae) with descriptions of four new genera. Records of the Australian Museum 41:135-206.
Russian Academy of Sciences (2000) Catalog of vertebrates of Kamchatka and adjacent waters. Kamchatsky Pechatny Dvor, Petropavlovsk-Kamchatsky, Russia. 166 p.
Mundy, B.C. (2005) Checklist of the fishes of the Hawaiian Archipelago. Bishop Mus. Bull. Zool. (6):1-704.
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