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Diagnostic Description

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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).
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Morphology

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Dorsal spines (total): 18 - 20; Dorsal soft rays (total): 13 - 15; Anal spines: 3; Analsoft rays: 9 - 12
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Trophic Strategy

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Found a variety of aquatic habitats, mostly in streams and mid-sized rivers; type locality an exception, being a large river pool, more than 100 meters wide; streams and rivers inhabited by C. ploegi possess clear water, a moderate to fast water flow, and rocky bottoms, usually with well-developed riparian forest; also found in rivers with highly disturbed or suppressed riparian forest (Ref. 119086).
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Crenicichla ploegi

provided by wikipedia EN

Crenicichla ploegi is a species of cichlid native to South America. It is found swimming in Brazil. This species reaches a length of 28 cm (11 in).[1]

Etymology

The fish is named in honor of Dutch ichthyologist Alex Ploeg, whose Ph.D. thesis dealt with the taxonomic revision, biogeography and phylogeny of Crenicichla, and who published papers on the systematics of the genus from 1986 to 1991, describing a total of 23 species, eighteen of which are still considered valid; afterwards, he worked as interlocutor between the ornamental fish industry and other institutions worldwide, before losing his life, along with his wife and son and son’s friend, when Malaysia Airlines flight MH17 was shot down by a missile over the Ukraine on 17 July 2014.[2]

References

  1. ^ "Crenicichla ploegi". fishbase.mnhn.fr.
  2. ^ Christopher Scharpf & Kenneth J. Lazara (22 September 2018). "Order Order CICHLIFORMES: Family CICHLIDAE: Subfamily CICHLINAE (a-c)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 15 November 2021.
  • 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
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Crenicichla ploegi: Brief Summary

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Crenicichla ploegi is a species of cichlid native to South America. It is found swimming in Brazil. This species reaches a length of 28 cm (11 in).

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