A review of the serranid fish genus Anthias of the Hawaiian Islands, with descriptions of two new species

Randall, John E.

doi:10.5962/p.208189

Cited by 10 publications

(19 citation statements)

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“…It lives in harems and males can have up to five females in their territory comprising several cleaning stations (one per female) (Robertson, 1972). The species is widespread in the Indopacific ocean and can also be found in the Red Sea (Randall, 1958). It feeds on the surface of other reef fish called clients by removing ectoparasites from them.…”

Section: Methodsmentioning

confidence: 99%

“…The species is widespread in the Indopacific ocean and can also be found in the Red Sea (Randall, 1958). It feeds on the surface of other reef fish called clients by removing ectoparasites from them.…”

Section: Cleaner Fish: Labroides Dimidiatusmentioning

confidence: 99%

“…Thus, our aim was to simultaneously test two closely linked hypotheses by using female cleaner fish Labroides dimidiatus as study species. We can easily distinguish between males and females in nature, as this species is protogynous the smallest individuals are females, whereas the biggest ones are males (Randall, 1958). First, do cleaner fish, as a representative of ectotherm vertebrates, express general intelligence as measured by a positive manifold, g , when tested for their performance on cognitive tasks from different cognitive domains?…”

Section: Introductionmentioning

confidence: 99%

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No evidence for general intelligence in a fish

2022

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The average mammal or bird has a roughly ten times larger brain relative to body size than the average ectotherm vertebrate. It has been surprisingly challenging to determine how this translates into increased cognitive performance. In particular, it is unclear whether the brain size differences translate into qualitative differences in specific cognitive abilities. Here, we provide a first exploratory study to examine the possibility that the larger brains of endotherms support a different organisation of information processing, rather than specific differences in cognitive processes. In mammals, individual performance across domain‐general cognitive tasks is positively correlated, resulting in the psychometric factor g. The value of g is positively correlated with brain size. We tested wild‐caught female cleaner fish Labroides dimidiatus, known for its highly sophisticated social behaviour, in four ecologically nonrelevant cognitive tasks that have been used to varying degrees to assess g in mammals. Cleaner fish solved three of these four tasks, flexibility (reversal learning), self‐control (detour around an obstacle) and numerical competence (simultaneous two‐choice task), while also providing enough interindividual variation to test for g. They did not perform above chance levels in the fourth task, which tested for object permanence. For the three retained tasks, individual performance did not load positively on one principal component. Furthermore, all pairwise correlation coefficients were close to zero. These negative results contradict a frequent criticism of g studies, which proposes that g is a default result of how brains are designed. Rather, the results provide a first indication that endotherm and ectotherm vertebrates may process cognitive tasks in fundamentally different ways due to differences in brain organisation. Our relatively low number of experiments compared to mammalian studies enhances this hypothesis, as the probability of finding a g factor by chance would have been higher.

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Section: Methodsmentioning

confidence: 99%

Section: Cleaner Fish: Labroides Dimidiatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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No evidence for general intelligence in a fish

2022

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“…The subfamily is dominated by a single genus, Chromis. As the most speciesrich genus in the family, Chromis has always been a broad, expansive taxon, though it was generally considered to be a natural assemblage (e.g., Randall and Swerdloff, 1973). However, no study with sufficient taxon sampling has inferred a monophyletic Chromis.…”

Section: Subfamily Chrominaementioning

confidence: 99%

“…Pomacentrids are generally small-to medium-sized, with most species rarely exceeding 100-150 mm standard length (SL), though some genera (e.g., Hypsypops, Nexilosus) can grow larger in size (.250 mm SL;Allen, 1991). Although the bulk of pomacentrid diversity is concentrated in the shallow waters of tropical coastal regions, some species of Indo-Pacific Chromis have been recorded at depths greater than 100 m (e.g., C. abyssicola, C. abyssus, C. bowesi, C. gunting, C. hangganan, C. mamatapara, C. struhsakeri, C. verater; Randall and Swerdloff, 1973;Allen and Randall, 1985;Pyle et al, 2008;Arango et al, 2019;Shepherd et al, 2020), a few genera occur in subtropical and temperate waters (e.g., Hypsypops, Parma; Allen and Hoese, 1975), and a few species are known from freshwater and brackish environments (e.g., Neopomacentrus aquadulcis, N. taeniurus, Pomacentrus taeniometopon, Stegastes otophorus; Emery, 1972;Allen, 1989Allen, , 1991Jenkins and Allen, 2002).…”

mentioning

confidence: 99%

Systematics of Damselfishes

Tang

Mayden

DeSalle

2021

Ichthyology & Herpetology

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The family Pomacentridae is a species-rich group of primarily marine fishes. The phylogenetic relationships of the damselfishes are examined herein using sequence data from five mitochondrial (12S, 16S, ATP synthase subunits 8/6, cytochrome b, and cytochrome c oxidase I) and three nuclear (histone H3, recombination activating gene 1 exon 3, and Tmo-4C4) loci. A combined data matrix of 6,865 base pairs was compiled for 462 taxa, representing 322 damselfish species, and used to reconstruct the phylogeny of pomacentrids via maximum likelihood. The resulting topology supports the monophyly of the family and some groups within it, corroborating some conclusions drawn by recent studies but contradicting others. We find that the family is composed of four major lineages, recognized herein as the subfamilies Chrominae, Glyphisodontinae, Microspathodontinae, and Pomacentrinae. The subfamily Microspathodontinae is sister to a clade of the other three subfamilies, and the subfamily Glyphisodontinae is sister to a clade of Chrominae and Pomacentrinae. The monotypic subfamily Lepidozyginae is recovered within Microspathodontinae and placed in the synonymy of Microspathodontinae. Species of Plectroglyphidodon and Stegastes are reassigned to maintain the monophyly of both genera. In Chrominae, the generic limits of Azurina and Chromis are revised to reflect monophyletic groups. The genus-group name Pycnochromis is resurrected to accommodate a group of former Chromis sister to Dascyllus. In Pomacentrinae, the genus Premnas is recovered within Amphiprion and placed in the synonymy of Amphiprion. The genus Chrysiptera is broadly polyphyletic within Pomacentrinae. The genus Amblypomacentrus is revised to accommodate some species formerly classified as Chrysiptera.

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Pseudanthias calloura (Teleostei: Perciformes), a new serranid fish from Palau, Central Pacific

Ida

Sakaue²

2001

Ichthyological Research

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A review of the serranid fish genus Anthias of the Hawaiian Islands, with descriptions of two new species

Cited by 10 publications

References 0 publications

No evidence for general intelligence in a fish

No evidence for general intelligence in a fish

Systematics of Damselfishes

Pseudanthias calloura (Teleostei: Perciformes), a new serranid fish from Palau, Central Pacific

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