Artigo

A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)

Most of the South American darters (Characidiinae) are drab-coloured, bottom-dwelling characins that lie in wait camouflaged against a predominately sandy or rocky substrate. In a striking contrast, Ammocryptocharax elegans differs from most characidiines by its ability to adopt a bright green colou...

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Autor principal: Zuanon, Jansen
Outros Autores: Carvalho, Lucélia Nobre, Sazima, Ivan
Grau: Artigo
Idioma: English
Publicado em: Ichthyological Exploration of Freshwaters 2020
Assuntos:
Anhingidae
Characidae
Characidiinae
Characidium
Crenuchidae
Hexapoda
Insecta
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18724
id oai:repositorio:1-18724
recordtype dspace
spelling oai:repositorio:1-18724 A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae) Zuanon, Jansen Carvalho, Lucélia Nobre Sazima, Ivan Anhingidae Characidae Characidiinae Characidium Crenuchidae Hexapoda Insecta Most of the South American darters (Characidiinae) are drab-coloured, bottom-dwelling characins that lie in wait camouflaged against a predominately sandy or rocky substrate. In a striking contrast, Ammocryptocharax elegans differs from most characidiines by its ability to adopt a bright green colour while on submerged live plants. Moreover, it uses its narrow and curved-tip pectoral fins, as well as the pelvic fins, to cling to the leaves' margins and fine roots. Besides the "sit-and-wait" tactic recorded for species of Characidium, this darter often moves over the tridimensional substrate and scans it visually twisting the head slightly and moving the eyes sideways. While in a site with strong waterflow it moves in a hopping-like fashion over the substrate. On the other hand, it takes advantage of the slower current area created downstream of an obstacle (plant tufts, root tangles), where it hovers undulating its dorsal fin. While hovering, it moves upwards, downwards, and forwards, scanning the substrate for prey. Its diet is composed of minute aquatic immature insects. In predominantly green surroundings the Chamaeleon South American darter usually shows green attire, whereas on a darker root tangle or a dead leaf it has a drab, grayish or brownish pattern. © 2006 by Verlag Dr. Friedrich Pfeil. 2020-06-15T22:02:44Z 2020-06-15T22:02:44Z 2006 Artigo https://repositorio.inpa.gov.br/handle/1/18724 en Volume 17, Número 3, Pags. 225-232 Restrito Ichthyological Exploration of Freshwaters
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Anhingidae
Characidae
Characidiinae
Characidium
Crenuchidae
Hexapoda
Insecta
spellingShingle Anhingidae
Characidae
Characidiinae
Characidium
Crenuchidae
Hexapoda
Insecta
Zuanon, Jansen
A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
topic_facet Anhingidae
Characidae
Characidiinae
Characidium
Crenuchidae
Hexapoda
Insecta
description Most of the South American darters (Characidiinae) are drab-coloured, bottom-dwelling characins that lie in wait camouflaged against a predominately sandy or rocky substrate. In a striking contrast, Ammocryptocharax elegans differs from most characidiines by its ability to adopt a bright green colour while on submerged live plants. Moreover, it uses its narrow and curved-tip pectoral fins, as well as the pelvic fins, to cling to the leaves' margins and fine roots. Besides the "sit-and-wait" tactic recorded for species of Characidium, this darter often moves over the tridimensional substrate and scans it visually twisting the head slightly and moving the eyes sideways. While in a site with strong waterflow it moves in a hopping-like fashion over the substrate. On the other hand, it takes advantage of the slower current area created downstream of an obstacle (plant tufts, root tangles), where it hovers undulating its dorsal fin. While hovering, it moves upwards, downwards, and forwards, scanning the substrate for prey. Its diet is composed of minute aquatic immature insects. In predominantly green surroundings the Chamaeleon South American darter usually shows green attire, whereas on a darker root tangle or a dead leaf it has a drab, grayish or brownish pattern. © 2006 by Verlag Dr. Friedrich Pfeil.
format Artigo
author Zuanon, Jansen
author2 Carvalho, Lucélia Nobre
Sazima, Ivan
author2Str Carvalho, Lucélia Nobre
Sazima, Ivan
title A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
title_short A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
title_full A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
title_fullStr A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
title_full_unstemmed A chamaeleon characin: The plant-clinging and colour-changing Ammocryptocharax elegans (Characidiinae: Crenuchidae)
title_sort chamaeleon characin: the plant-clinging and colour-changing ammocryptocharax elegans (characidiinae: crenuchidae)
publisher Ichthyological Exploration of Freshwaters
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18724
_version_ 1787141786257326080
score 11.675608

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