Mexico country information

Common names: Dama blanca ciega, Dama Ciega Blanca, Mexican blind brotula
Occurrence: endemic
Salinity: freshwater
Abundance: occasional (usually not seen) | Ref: Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Importance: of no interest | Ref: Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in the Yucatan Peninsula (Ref. 34024). Type locality, pool in Balaam Canche Cave near Chichen Itza, Yucatán (Ref. 33021). Also Ref. 3881, 27299, 79893. Status of threat: endangered; status same as 1989. Criteria: 1,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mx.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999
National Database:

Common names from other countries

Dama Ciega Blanca, Dama blanca ciega, 皮氏胎须鳚, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Ophidiiformes (Cusk eels) > Dinematichthyidae (Viviparous brotula)
Etymology: More on author: Hubbs.

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

Freshwater; demersal; depth range 0 - 70 m (Ref. 55786). Tropical; 21°N - 20°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Central America: Yucatan Peninsula, Mexico.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 9.7 cm SL male/unsexed; (Ref. 55786); 8.9 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 75 - 87; Anal soft rays: 59 - 68; Vertebrae: 40 - 43. This species is distinguished by the following characters: anterior nostril placed low on snout; tip of opercular spine free; 2 pairs of psedoclaspers, inner one positioned in front of outer one; eyes not visible (eyes minute black dots in specimens less than 20 mm SL); head naked; otolith with fused colliculi; 3 lower preopercular pores; maxillary strongly vertically expanded posteriorly, knob at rear corner; 5-7 prolonged rakers on anterior gill arch; anterior anal fin pterygiophore elongated; pseudobranchial filaments absent (Ref. 55786).

Uncommon species found in caves and sinkholes (Ref. 34024). Associated with the blind synbranchid fish Ophisternon infernale (Hubbs, 1938) and several blind crustacean species. In only one cave, it was found with the catfish Rhamdia guatemalensis (Günther, 1864). This species does not react to flashlights, but darted away at the slightest vibration; it seems to feed on troglobitic shrimps and mysids. Newly-born juveniles are light yellow and about 20 mm long (Ref. 55786).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Viviparous.

Main reference Upload your references | References | Coordinator | Collaborators

Møller, P.R., W. Schwarzhans and J.G. Nielsen, 2004. Review of the American Dinematichthyini (Teleostei, Bythitidae). Part I. Dinematichthys, Gunterichthys, Typhliasina and two new genera. aqua, J. Ichthyol. Aquat. Biol. 8(4):141-192. (Ref. 55786)

IUCN Red List Status (Ref. 130435)

Near Threatened (NT) ; Date assessed: 05 October 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [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): 3.4 ±0.5 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec < 100).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Typhliasina pearsei (Hubbs, 1938)