Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Rivulidae
Etymology: planaltinus: Derived from the Planaltina (from the high plains), a Portuguese name for the county where the type locality is located.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: known only from the type locality in the Cocal River floodplains, Maranhão River drainage, upper Tocantins River basin in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL male/unsexed; (Ref. 75171); 2.8 cm SL (female)
Morphology | Morphometrics
soft rays: 12 - 14. Belongs to the subgenus Melanorivulus by having all the subgeneric synapomorphic characters: short and pointed dorsal portion of preopercle; melanophores concentrated on opercular region to form oblique stripes; melanophores concentrated on margins of unpaired fins in females; black spot on upper portion of caudal-fin base not close to fin margin in females. Differs from all other species of Melanorivulus by the following characters: lack or extreme reduction of pelvic fins and pelvic girdle; vomerine teeth 5-7; and basihyal width about 70% basihyal length (Ref. 75171).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Costa, W.J.E.M. and G.C. Brasil, 2008. A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00199 - 0.01149), b=3.14 (2.93 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.4 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 (10 of 100) .