Actinopteri (ray-finned fishes) > Pleuronectiformes
(Flatfishes) > Achiridae
Etymology: Apionichthys: Greek, apion = pear + Greek, ichthys = fish; it also exists "a-pion", no fatty (Ref. 45335).
More on author: Eigenmann.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: Potaro River basin in Essequibo River drainage and middle to upper Amazon basin.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.8 cm SL male/unsexed; (Ref. 49504)
Morphology | Morphometrics
soft rays: 46 - 51;
Vertebrae: 32 - 35. Presence of scales on all areas of the head (except nasal area and a very narrow stripe on angle of preopercle in specimens larger than 5 cm SL); absence of a membrane connecting the dorsal, anal and caudal fins; two pelvic fins juxtaposed, enclosed by a single dermal envelope and positioned on the medial ventral line of the body (Ref. 49504).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ramos, R.T.C., 2003. Systematic review of Apionichthys (Pleuronectiformes: Achiridae), with description of four new species. Ichthyol. Explor. Freshwat. 14(2):97-126. (Ref. 49504)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00604 - 0.02878), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .