Iridophoroma in Indian mackerel,<i>Rastrelliger kanagurta</i>(Cuvier, 1816)

Singaravel, Vijayapoopathi; Gopalakrishnan, Ayyaru; Raja, Kavitha

doi:10.1111/jai.13226

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…An iridophoroma was also noted in an Indian mackerel, Rastrelliger kanagurta . The mass was a whitish tissue growth located on the right flank behind the pectoral fin with histopathology findings consistent with iridophoromas 17. Leucophoromas were found to be white spindle‐shaped cells with oval, hyperchromatic nuclei.…”

Section: Discussionmentioning

confidence: 86%

Chromatophoroma in a Siamese fighting fish (Betta splendens)

Ciambrone

Chen

Tokarz

et al. 2019

Vet Record Case Reports

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An adult male blue Siamese fighting fish (Betta splendens) presented to the North Carolina State University College of Veterinary Medicine with a cranial mass located dorsal to his right eye. A fine-needle aspiration was performed followed by supportive care. Due to the patient’s small size aggressive treatment was not elected. The mass continued to expand over a course of five months until the patient was found deceased, and a postmortem examination was performed. Histopathology determined the mass to be a chromatophoroma of the iridophoroma or leucophoroma subtypes. This is the first documentation of a chromatophoroma in B splendens.

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Section: Discussionmentioning

confidence: 86%

Chromatophoroma in a Siamese fighting fish (Betta splendens)

Ciambrone

Chen

Tokarz

et al. 2019

Vet Record Case Reports

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“…Iridophoroma has been reported in teleosts. 29,37,43 All of the iridophoroma cases were reported in bumblebee cichlids (Pseudotropheus crabro) in our study population. We retrieved no cases of iridophoroma in bumblebee cichlids in a search of PubMed and Google Scholar, using search terms "iridophoroma," "bumblebee cichlid," and "Pseudotropheus crabro," suggesting that iridophoroma has not been reported previously in bumblebee cichlids.…”

Section: Discussionmentioning

confidence: 91%

Review of neoplasia in fish at a large display aquarium, 2005–2021

Wright,

Pawlik,

Snyman

et al. 2024

J VET Diagn Invest

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Fish maintained in managed care may have longer lifespans as a result of advances in veterinary medicine and husbandry and reduced risk of predation. Neoplasia is of increasing interest in managed aquarium populations. However, few studies have systematically evaluated neoplasia in managed fish populations. Our objective in this retrospective study was to review and describe neoplasia diagnosed in fish at a large public display aquarium between 2005 and 2021. Any fish diagnosed with neoplasia on either antemortem or postmortem evaluation during the study period was included, and all medical records, biopsy, and autopsy reports were reviewed. Sixty-two fish met the inclusion criteria; 37 species were included in the study population, most of which were tropical freshwater fish ( n = 34 fish). Thirty-two types of neoplasia were identified. Ten fish had benign neoplasms, and 53 fish had malignant neoplasms. The most common neoplasms were of epithelial and neuroectodermal origin. The most common site of tumor origin was the skin. Our data suggest that mesenchymal neoplasms may be more common in cold saltwater fish than in tropical freshwater and saltwater fish. Malignant neoplasms were most commonly diagnosed in the study population and should be a top differential when neoplasms are identified in fish managed under human care. Our study contributes to the overall knowledge of the health of aquarium fish and may aid clinicians in characterizing neoplasia that may be present in fish under human care.

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“…However, based on their darkened appearance, it is possible that increased melanin is a characteristic of the lesions in E. quoyanus, as was described for P. leopardus by Sweet et al (2012) and Lerebours et al (2016). Of the various pigment cell tumours in fish, melanophoromas (melanoma) are common relative to other types of tumours (Singaravel et al 2017). Malignant neoplastic melanomas may be aggressively invasive and hyperplastic (Okihiro 1988;Okihiro et al 1992;Raloff 2012;Work and Aeby 2014) compared with benign melanomas or preneoplastic melanosis, the latter being the most common skin pigmentation lesion recorded in redfish (Sebastes mentella) from the North Atlantic (Bogovski and Bakai 1989).…”

Section: Discussionmentioning

confidence: 99%

Emergence of serranid pigment abnormality syndrome (SPAS) in wire netting cod (Epinephelus quoyanus) from Heron Island on the southern Great Barrier Reef

Diggles

Ernst²,

Wesche

2018

Mar. Freshwater Res.

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Coral reefs worldwide are under increasing stress from anthropogenic impacts, but there are relatively few reports of increased rates of disease in coral reef fish. Herein we report the emergence of abnormal skin lesions in wild-caught wire netting cod (Epinephelus quoyanus) near Heron Island in the southern Great Barrier Reef. The lesion involves conspicuous darkening and disorganisation of the brown ‘wire netting’ colouration pattern typical of this species, most commonly on the lower jaw, premaxilla and head, with occasional involvement of the flanks and dorsal fin in some fish. The lesion was not present during research conducted in the mid-1990s; however, since it was first recorded in 2012, the prevalence of grossly visible lesions has increased to 16.9% in 2017, with fish >340mm long most affected (prevalence 64.7%). These data suggest emergence of the lesion is a recent phenomenon and that causative factors may be age related. Abnormal pigmentation lesions have only been observed to affect E. quoyanus and coral trout (Plectropomus leopardus; since 2010). Given the species affected and the currently unknown aetiology of these lesions, we name the condition serranid pigment abnormality syndrome (SPAS). Further research is required to determine its geographic distribution, establish causation and describe the course of disease in E. quoyanus.

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Iridophoroma in Indian mackerel,Rastrelliger kanagurta(Cuvier, 1816)

Cited by 5 publications

References 15 publications

Chromatophoroma in a Siamese fighting fish (Betta splendens)

Chromatophoroma in a Siamese fighting fish (Betta splendens)

Review of neoplasia in fish at a large display aquarium, 2005–2021

Emergence of serranid pigment abnormality syndrome (SPAS) in wire netting cod (Epinephelus quoyanus) from Heron Island on the southern Great Barrier Reef

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