dcsimg

Diagnostic Description

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This species is distinguished by the following set of characters: teeth properly incisor, even in young; caudal edge of mesethmoid with a unique shape; caudal edge of supraoccipital crest straight, inclined rostrad, its height 27% of postethmoid skull length; width of posterior premaxillary expansion greater than 41% of length of the same bone; arms of articular equal in length; gut S-folded ventrorostrally in adults, anal and medial loops nearly touching; with an abrupt, steep head profile (Ref. 74403).
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Recorder
Estelita Emily Capuli
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Life Cycle

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Spawns in caves. During spawning both parents completely change their color.
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Tom Froese
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Morphology

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Dorsal spines (total): 18 - 19; Dorsal soft rays (total): 9 - 10; Anal spines: 7 - 8; Analsoft rays: 6 - 7
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Estelita Emily Capuli
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Trophic Strategy

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Inhabits both lakes and rivers. Proliferates in rivers with medium to high velocities. Feeds on aufwuchs which cover rocks and submersed trees and filaments of algae.
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Drina Sta. Iglesia
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Biology

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Inhabits both lakes and rivers. Proliferates in rivers with medium to high velocities. Found between 35 and 535 m elevation (Ref. 36880). Feeds on aufwuchs which cover rocks and submersed trees and filaments of algae.
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Christine Marie V. Casal
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Poor man's tropheus

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The poor man's tropheus (Neetroplus nematopus) is a species of fish in the family Cichlidae. Until 2007 it was the only species in the genus Neetroplus, but at that time it was reclassified into the genus Hypsophrys.[3] In 2016 it was restored to the genus Neetroplus based on genetic research by Říčan, et al.[4]

It is a small-medium-sized cichlid growing to a length of 12 cm. It occurs in Central America in Lake Xiloá, Lake Managua, Lake Masaya and Lake Nicaragua and in riverine habitats on the Atlantic coasts of Costa Rica and Nicaragua. Like most Central American cichlids the species is commonly found in hard, alkaline (pH 7.5) water. Its diet consists of algae and plant material which it scrapes from rocks and other hard surfaces in a fashion similar to algal grazing cichlids of Lake Malawi in Africa. Some populations are reportedly involved in cleaning other fish of parasites. It also eats chironomid larvae, and is more efficient at winnowing through soft sediment on the river-bed than might be expected from the shape of its snout, moving large quantities of sand with its mouth and sweeping sand away with its fins and tail.[5]

It uses the same skills when excavating a hole for its nest.[5] Like all cichlids, brood care is highly developed with both parents involved in fry raising. Colouration changes dramatically (see pictures) while breeding.

References

  1. ^ Lyons, TJ. (2022). "L". IUCN Red List of Threatened Species. 2020: e.T152306251A152306348. doi:10.2305/IUCN.UK.2020-3.RLTS.T152306251A152306348.en. Retrieved 1 November 2022.|date= / |doi= mismatch
  2. ^ Froese, Rainer; Pauly, Daniel (eds.) (2018). "Hypsophrys nematopus" in FishBase. KJune 2018 version.
  3. ^ "Convict and Jack Dempsey placed in new genera". Archived from the original on 2007-12-28. Retrieved 2008-06-27.
  4. ^ Říčan, O.; Piálek, L.; Dragová, K. & Novák, J. (2016). "Diversity and evolution of the Middle American cichlid fishes (Teleostei: Cichlidae) with revised classification" (PDF). Vertebrate Zoology. 66 (1): 1–102. Retrieved 2019-01-25.
  5. ^ a b López-Fernández, Hernán; Arbour, Jessica; Willis, Stuart; Watkins, Crystal; Honeycutt, Rodney L.; Winemiller, Kirk O. (2014). "Morphology and Efficiency of a Specialized Foraging Behavior, Sediment Sifting, in Neotropical Cichlid Fishes". PLOS ONE. 9 (3): e89832. Bibcode:2014PLoSO...989832L. doi:10.1371/journal.pone.0089832. PMC 3945966. PMID 24603485.

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Poor man's tropheus: Brief Summary

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The poor man's tropheus (Neetroplus nematopus) is a species of fish in the family Cichlidae. Until 2007 it was the only species in the genus Neetroplus, but at that time it was reclassified into the genus Hypsophrys. In 2016 it was restored to the genus Neetroplus based on genetic research by Říčan, et al.

It is a small-medium-sized cichlid growing to a length of 12 cm. It occurs in Central America in Lake Xiloá, Lake Managua, Lake Masaya and Lake Nicaragua and in riverine habitats on the Atlantic coasts of Costa Rica and Nicaragua. Like most Central American cichlids the species is commonly found in hard, alkaline (pH 7.5) water. Its diet consists of algae and plant material which it scrapes from rocks and other hard surfaces in a fashion similar to algal grazing cichlids of Lake Malawi in Africa. Some populations are reportedly involved in cleaning other fish of parasites. It also eats chironomid larvae, and is more efficient at winnowing through soft sediment on the river-bed than might be expected from the shape of its snout, moving large quantities of sand with its mouth and sweeping sand away with its fins and tail.

It uses the same skills when excavating a hole for its nest. Like all cichlids, brood care is highly developed with both parents involved in fry raising. Colouration changes dramatically (see pictures) while breeding.

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