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Teleostei (teleosts) > Atheriniformes (Silversides) > Phallostethidae (Priapiumfishes)
Etymology: Phallostethus: Greek, phallos = penis + Greek, stetho, stethion = brest; literal = to prick a little breast (Ref. 45335); cuulong: The specific name is the Vietnamese name of the Mekong delta (Cưu Long), where the type series of the new species was collected. A noun in apposition, means nine dragons, in reference to nine distributaries of the Mekong basin in Vietnam..

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; brackish; benthopelagic; depth range 1 - ? m. Tropical

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Asia: Soc Trang and Tra Vinh Provinces, Vietnam.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 24.5 cm SL male/unsexed; (Ref. 90869)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 7 - 9; Anal soft rays: 24 - 27; Vertebrae: 37 - 40. Differs from all other species of the genus Phallostethus in having the following characters: second ctenactinium with seven serrae in adult males; pectoral fin with 11-13 rays ; 11-14+25-26=37-40 vertebrae; approximately 5-19 teeth on paradentary. Males are dextral based on six specimens; 25-26 caudal vertebrae, sexual dimorphism is also found in the number of precaudal vertebrae, 13-14 in males and 11-12 in females (Ref. 90869).

Occurs in shallow waters (<1.2 m depth) around banks of slow-flowing turbid canals and rivers with soft muddy bottoms. Usually solitary. Sympatric with aplocheilid Aplocheilus panchax (Ref. 90869).

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Main reference Upload your references | References | Coordinator | Collaborators

Shibukawa, K., D.D. Tran and L.X. Tran, 2012. Phallostethus cuulong, a new species of priapiumfish (Actinopterygii: Atheriniformes: Phallostethidae) from the Vietnamese Mekong. Zootaxa 3363:45-51. (Ref. 90869)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 17 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.3 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (20 of 100).

Phallostethus cuulong Shibukawa, Tran & Tran, 2012