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Related Concept Videos

Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Disorders of Hemostasis01:24

Disorders of Hemostasis

Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
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Osmoregulation in Fishes02:32

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
Disorders of Leukocytes01:27

Disorders of Leukocytes

Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune system...

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Related Experiment Video

Updated: Jul 3, 2026

Isolation, Fixation and Characterization of Juvenile Gilthead Seabream Head Kidney Leukocytes by Flow Cytometry
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Isolation, Fixation and Characterization of Juvenile Gilthead Seabream Head Kidney Leukocytes by Flow Cytometry

Published on: May 9, 2025

Hematologic disorders of fish.

Tonya M Clauss1, Alistair D M Dove, Jill E Arnold

  • 1Veterinary Services and Conservation Medicine, Georgia Aquarium, 225 Baker Street, Atlanta, GA 30313, USA. tclauss@georgiaaquarium.org

The Veterinary Clinics of North America. Exotic Animal Practice
|August 5, 2008
PubMed
Summary
This summary is machine-generated.

Fish hematology aids health monitoring but faces challenges due to diverse species and lack of reference values. This review covers hematologic abnormalities caused by infections, environment, and nutrition in fish.

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Last Updated: Jul 3, 2026

Isolation, Fixation and Characterization of Juvenile Gilthead Seabream Head Kidney Leukocytes by Flow Cytometry
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Published on: May 9, 2025

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Published on: September 11, 2018

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Repeated Blood Collection for Blood Tests in Adult Zebrafish

Published on: August 30, 2015

Area of Science:

  • Aquatic veterinary medicine
  • Comparative hematology

Background:

  • Hematology is crucial for monitoring fish health, disease detection, and treatment efficacy.
  • Interpreting fish hematology is challenging due to limited reference values and species diversity.
  • Numerous intrinsic and extrinsic factors influence hematologic data variability.

Purpose of the Study:

  • To provide an overview of hematologic abnormalities in fish.
  • To discuss factors influencing fish hematology, including infectious agents and environmental issues.

Main Methods:

  • Review of existing literature on fish hematology.
  • Analysis of factors causing hematologic variations in fish.

Main Results:

  • Hematologic abnormalities in fish can stem from infectious agents.
  • Environmental, husbandry, and nutritional factors significantly impact fish hematologic parameters.
  • Understanding these factors is key to accurate health assessment.

Conclusions:

  • Hematology is a valuable tool in fish medicine, despite interpretation challenges.
  • Addressing variations from infectious, environmental, husbandry, and nutritional factors is essential for effective fish health management.