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    Overview

    The Rudd (Scardinius erythrophthalmus) is medium-sized, top-feeding species that can grow to 20 – 25 cm and 0.5 – 1.0 kg. The species is native to Europe where it is widespread. The species usually mature at 2 – 4 years and lives 10 – 14 years.

    They prefer zooplankton, weed-dwelling invertebrates and terrestrial insects on the surface. Rudd appears always to spend their time in compact shoals, no matter how large they get. The Rudd is a popular fish to catch, being attractive and readily taking the bait.

    While Rudds are tolerant, it is likely that environmental conditions can be stressful at least some of the time for them to develop squamous cell carcinomas. Although the exact cause is still unknown, the possibilities of carcinogenic compounds resulting from the high nutrient levels, or of carcinogenic algal toxins produced during algal blooms, may be the factors.

    Video Credits: Łowiectwo podwodne – w zgodzie z przepisami
    Image Credits: Iidkk, WikiMedia

    References:

    1. Ian Wellby, Ash Girdler, Robin Welcomme – Fisheries Management: A Manual For Still-water Coarse Fisheries
    2. Hanajavanit et al. – Epidemiology Of Squamous Cell Carcinomas In Rudd Scardinius Erythrophthalmus From SE Ireland

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