Atlas of Fish of Tapajós and Negro Rivers III: Perciformes and Other Fish Groups

Silvano, Renato Azevedo Matias; Nitschke, Pedro Peixoto; Vieira, Kaluan C.; Nagl, Paula; Martínez, Astrid T. R.; Dutra, Márcia C. F.; Keppeler, Friedrich W.; Chuctaya, Junior; Andrade, Marcelo C.

doi:10.1007/978-3-030-49146-8_6

Cited by 2 publications

(4 citation statements)

References 27 publications

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“…Silvano et al . (2020), 353–354 (brief description on the importance of this species for fishery in the Lower Tapajós River and biometric relationships).…”

Section: Resultsmentioning

confidence: 99%

“…‘Tapajós Orange Head’ and Geophagus sp. ‘red head’ (López‐Fernández & Taphorn, 2004; Steinhaus, 2010; Silvano et al ., 2020; Figure 8). The aquarium trade may hold many more undescribed cichlid species (Weidner, 2000).…”

Section: Discussionmentioning

confidence: 99%

“…The use of multiple lines of evidence is an increasing strategy in recovering and describing biological diversity, especially in the case of Neotropical fishes (Malabarba et al ., 2021). The new species described herein has long been classified as a different morphotype of the genus Geophagus in the aquarium hobby, based mostly on the peculiar red or orange colour pattern observed on the head and anterior portion of the body (Figure 8; López‐Fernández & Taphorn, 2004; Silvano et al ., 2020). To test if it actually represents a separate lineage and an undescribed species of the genus (De Queiroz.…”

Section: Discussionmentioning

confidence: 99%

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A new species of Geophagus (Teleostei: Cichlidae): Naming a cichlid species widely known in the aquarium hobby as ‘Geophagus sp. Tapajos red head’

Chuctaya

Nitschke

Andrade

et al. 2022

Journal of Fish Biology

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A new species of Geophagus sensu stricto is described from the Tapajos River basin, Brazil, elevating the number of species of the genus to 21. The new species is of commercial importance and is known in the aquarist trade as Geophagus 'red head'. The new species is diagnosed using an integrative approach, based on mitochondrial DNA analysis along with morphological evidence. The new species is distinguished from all congeners by the absence of markings on the head, the bar pattern composed by nine vertical bars on the flanks and the presence of distinct longitudinal bands in the caudal fin. Additionally, it shows a genetic distance of at least 2.0% in cytochrome b gene sequences from its closest congeners. Molecular analysis including most genera of Cichlidae from South America corroborates that the new species belongs to the group of Geophagus sensu stricto.

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“…Silvano et al . (2020), 353–354 (brief description on the importance of this species for fishery in the Lower Tapajós River and biometric relationships).…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A new species of Geophagus (Teleostei: Cichlidae): Naming a cichlid species widely known in the aquarium hobby as ‘Geophagus sp. Tapajos red head’

Chuctaya

Nitschke

Andrade

et al. 2022

Journal of Fish Biology

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“…Cichlids are commonly found in Amazonian waters and are important in the ornamental fish trade [20,21]. In this study, aiming to increase the knowledge about South American myxozoan diversity, two species were isolated from the gallbladder of some cichlid fish commonly found in Amazonian waters.…”

Section: Introductionmentioning

confidence: 99%

Myxozoan Ceratomyxids Infecting the Gallbladder of Amazonian Ornamental Cichlid Fish: Description of Ellipsomyxa santarenensis n. sp. and Report of Ceratomyxa amazonensis in a New Host

et al. 2023

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Although most Myxozoa species of the genera Ceratomyxa and Ellipsomyxa have been described in marine hosts worldwide, an increasing diversity has been reported infecting South American freshwater fish, mainly in Amazonian waters. The present study deals with two species of myxozoan ceratomyxids parasitizing the gallbladder of Amazonian ornamental cichlids fish: Ceratomyxa amazonensis is identified from a new host—Geophagus altifrons; while Ellipsomyxa santarenensis n. sp. is described infecting Satanoperca jurupari. Morphological (light microscopy and transmission electron microscopy), molecular (small ribosomal subunit DNA—SSU-rDNA sequencing) and phylogenetic analyses were used to characterize both species. Ceratomyxa amazonensis showed a prevalence of 64.2%, with plasmodia showing a vermiform shape and motility. For E. santarenensis n. sp., the prevalence was 33.3%. Ultrastructural analysis revealed that the vermiform C. amazonensis plasmodia were composed of an outer cytoplasmic region and a large vacuole occupying the inner area. In E. santarenensis n. sp., cytoplasmic expansions were observed in pseudoplasmodia originating pseudopodia. SSU rDNA sequencing-based genetic distance analysis revealed a very small difference between C. amazonensis, parasite of G. altifrons, and C. amazonensis, parasite of S. discus—host of the original description, thus showing that they are the same species occurring in a new host. For Ellipsomyxa santarenensis n. sp., molecular data revealed a difference of 1.6% for Ellipsomyxa amazonensis and Ellipsomyxa paraensis. The phylogenetic analysis revealed the grouping of E. santarenensis n. sp. together with the other freshwater Ellipsomyxa species of the Amazonian region, and associated with the morphological data, it was possible to identify it as a new taxon within the genus Ellipsomyxa.

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Atlas of Fish of Tapajós and Negro Rivers III: Perciformes and Other Fish Groups

Cited by 2 publications

References 27 publications

A new species of Geophagus (Teleostei: Cichlidae): Naming a cichlid species widely known in the aquarium hobby as ‘Geophagus sp. Tapajos red head’

A new species of Geophagus (Teleostei: Cichlidae): Naming a cichlid species widely known in the aquarium hobby as ‘Geophagus sp. Tapajos red head’

Myxozoan Ceratomyxids Infecting the Gallbladder of Amazonian Ornamental Cichlid Fish: Description of Ellipsomyxa santarenensis n. sp. and Report of Ceratomyxa amazonensis in a New Host

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