Histopathological Assessment of Diseases in Ornamental Fish from 2019 to 2023 in Minas Gerais State, Brazil.
4 affiliations
- 1Department of Veterinary Clinics and Surgery, School of Veterinary Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Minas Gerais, Brazil.
- 2Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Minas Gerais, Brazil.
- 3Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Minas Gerais, Brazil.
- 4Department of Comparative Diagnostic and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL 32608, USA.
Abstract
The present study aimed to investigate the anatomopathological findings in ornamental fish from multiple sources, submitted to the diagnostic service at the Veterinary School of the Universidade Federal de Minas Gerais (UFMG) between 2019 and 2023. Macroscopic and histopathologic examinations were conducted, and the resulting data regarding disease processes were analyzed through a descriptive observational approach. A total of 635 ornamental fish were studied, with a predominance of exotic fish species. The fish were sourced from ornamental fish farms (37.00%; 235/635), shopkeepers (32.44%; 206/635), facilities (18.43%; 117/635), hobbyists (8.66%; 55/635), and wholesalers (3.46%; 22/635). Among the analyzed cases, 50.39% (320/635) presented relevant anatomopathological findings. The main categories of diseases detected were parasitic (56.25%; 180/320), bacterial (20.31%; 65/320), fungal/oomycete (7.50%; 24/320), viral (7.18%; 23/320), neoplastic (1.88%; 6/320), congenital (2.50%; 8/320), and metabolic (0.94%; 3/320). The main parasites found were unidentified digeneans (15.45%; 34/220), presumed Centrocestus formosanus (14.55%; 32/220), monogeneans (13.18%; 29/220), presumed Tetrahymena spp. (8.18%; 18/220), and presumed Epistylis (6.36%; 14/220). There were diagnoses of undocumented diseases in Brazil, such as the suggestive cases of Ichthyophonus spp. In addition, novel potential pathogen-host associations in the country were documented, such as Pleistophora sp. in Carnegiella strigata. This study presents findings that can contribute to determining disease frequency and identifying pathogens based on microscopic lesions.
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BibTeX
@article{marcelino2026histopathological,
title = {{Histopathological Assessment of Diseases in Ornamental Fish from 2019 to 2023 in Minas Gerais State, Brazil.}},
author = {Sóstenes Apolo Correia Marcelino and Leonardo Lima Gorza and Sarah Portes Carneiro and Rafael Romero Nicolino and Hudson Alves Pinto and Guilherme Campos Tavares and Roselene Ecco and Felipe Pierezan},
journal = {Animals : an open access journal from MDPI},
year = {2026},
month = oct,
doi = {10.3390/ani16203164},
url = {https://europepmc.org/article/MED/42939095},
note = {CC BY},
}
RIS
TY - JOUR
TI - Histopathological Assessment of Diseases in Ornamental Fish from 2019 to 2023 in Minas Gerais State, Brazil.
AU - Sóstenes Apolo Correia Marcelino
AU - Leonardo Lima Gorza
AU - Sarah Portes Carneiro
AU - Rafael Romero Nicolino
AU - Hudson Alves Pinto
AU - Guilherme Campos Tavares
AU - Roselene Ecco
AU - Felipe Pierezan
PY - 2026
DA - 2026/10/09
JO - Animals : an open access journal from MDPI
DO - 10.3390/ani16203164
UR - https://europepmc.org/article/MED/42939095
AB - The present study aimed to investigate the anatomopathological findings in ornamental fish from multiple sources, submitted to the diagnostic service at the Veterinary School of the Universidade Federal de Minas Gerais (UFMG) between 2019 and 2023. Macroscopic and histopathologic examinations were conducted, and the resulting data regarding disease processes were analyzed through a descriptive observational approach. A total of 635 ornamental fish were studied, with a predominance of exotic fish species. The fish were sourced from ornamental fish farms (37.00%; 235/635), shopkeepers (32.44%; 206/635), facilities (18.43%; 117/635), hobbyists (8.66%; 55/635), and wholesalers (3.46%; 22/635). Among the analyzed cases, 50.39% (320/635) presented relevant anatomopathological findings. The main categories of diseases detected were parasitic (56.25%; 180/320), bacterial (20.31%; 65/320), fungal/oomycete (7.50%; 24/320), viral (7.18%; 23/320), neoplastic (1.88%; 6/320), congenital (2.50%; 8/320), and metabolic (0.94%; 3/320). The main parasites found were unidentified digeneans (15.45%; 34/220), presumed Centrocestus formosanus (14.55%; 32/220), monogeneans (13.18%; 29/220), presumed Tetrahymena spp. (8.18%; 18/220), and presumed Epistylis (6.36%; 14/220). There were diagnoses of undocumented diseases in Brazil, such as the suggestive cases of Ichthyophonus spp. In addition, novel potential pathogen-host associations in the country were documented, such as Pleistophora sp. in Carnegiella strigata. This study presents findings that can contribute to determining disease frequency and identifying pathogens based on microscopic lesions.
SN - 2076-2615
ER -