Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Cichlinae
Etymology: Crenicichla: Latin, crenulatus = cut, clipped + Greek, kichle = wrasse (Ref. 45335); ploegi: Named in honor of the Dutch ichthyologist Alex Ploeg (Ref. 119086).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America, Brazil
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 19.0 cm SL male/unsexed; (Ref. 119086); 11.6 cm SL (female)
Morphology | Morphometrics
(total): 18 - 20;
soft rays: 9 - 12. Diagnosis: Crenicichla ploegi is placed in the C. saxatilis species group by having a humeral blotch even in the smallest specimens observed, less than 80 scales in the E1 row (58–71), dimorphic males with many light dots scattered on the flank, and infraorbital series with very slender lacrimal bone and 5 separate post-lacrimal tubular infraorbitals; distinguished from all other species of the C. saxatilis group by the presence of dark spots and vermiculations on snout, interorbital area and dorsally on head in many adults up to 146.6 mm SL vs. dark markings absent or present only in juveniles but absent in adults (head uniformly dark gray in adults from 80 mm SL), and by the presence of a deep and strongly pigmented lateral band present in both juveniles and adults, occupying a depth of 4–6 horizontal scale rows vs. lateral band narrower, occupying a depth of 2–3 horizontal scale rows, and conspicuous only in juveniles and smaller specimens, faded or absent in larger specimens; Crenicichla ploegi is more elongate (body depth 17.8–21.7% SL) and has more scales in the E1 row (58–71 scales) than C. brasiliensis, C. britskii, C. frenata, C. isbrueckeri, C. labrina, C. lepidota, C.proteus, C. santosi, C. saxatilis and C. semicincta (body depth more than 21% SL, and fewer than 56 scales in the E1 row); Crenicichla ploegi differs from C. alta, C. albopunctata, C. anthurus, C. coppenamensis, C. pydanielae and C. sipaliwini by having the humeral blotch situated almost entirely below the anterior branch of the lateral line vs. humeral blotch with center on the level of the anterior branch of the lateral line (Ref. 119086).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Varella, H.R., M.V. Loeb, Lima F.C.T. and S.O. Kullander, 2018. Crenicichla ploegi, a new species of pike-cichlid of the C. saxatilis group from the Rio Juruena and upper Rio Paraguai basins in Brazil, with an updated diagnosis and biogeographical comments on the group (Teleostei: Cichlidae). Zootaxa 4377(3):361-386 (Ref. 119086)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00349 - 0.01806), b=3.09 (2.90 - 3.28), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±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.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .