Actinopterygii (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Bythitidae
(Viviparous brotulas) > Bythitinae
Etymology: Ogilbichthys: Named for the great Australian ichthyologist, J. Douglas Ogilby.; kakuki: Named for Brian Kakuk, Caribbean Marine Research Center, Lee Stocking Island, Bahamas. More on authors: Møller, Schwarzhans & Nielsen.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 15 m (Ref. 55786). Tropical
Western Central Atlantic: Haiti and Bahamas.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.7 cm SL male/unsexed; (Ref. 55786); 6.6 cm SL (female)
Morphology | Morphometrics
soft rays: 53 - 61;
Vertebrae: 40 - 42. This species is characterized by the following: outer pseudoclasper wing-like with distinct knob at tip of inner face, isthmus between pseudoclaspers narrower than base of penis; broad anterior inner pseudoclasper; scale band on cheek with 1 or 2 rows on lower cheek; otolith with separate colliculi (Ref. 55786).
Found in coral reefs, but has also been caught 230 mm inside an ocean blue hole in the Exuma Cays, Bahamas. The eye is not particularly small, indicating that it is not a very specialized cave species. A 6.1 cm SL female specimen caught from San Salvador Island contained 50 immature embryos (4 mm length) and 40 eggs between 0.2-0.4 mm in diameter (Ref. 55786).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. Ichthy. Aquat. Biol. 8(4):141-192. (Ref. 55786)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 27 - 28.1, mean 27.6 (based on 333 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .