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Environmental differences in fish

Scientists reveal contrasts in fish of same species

A recent study has revealed that the parasitic communities of fish can differ greatly within the same species depending on its location.

Although every body of water on earth contains a unique variety of species and organisms, it has previously been unknown how largely this can affect fish of the same species living within the same region.

A recent study, published in the Journal of Parasitology, has revealed that fish of the same species, living in lakes just 1.5 miles (2.5 kilometres) apart, have different parasitic communities.

One of the lakes has been minimally affected by human factors, whereas, five species of non-indigenous fish have been added to the other.

The two species studied, which are both native to the lakes they inhabit, showed a a difference in parasites due to contrasts in their environment.

Furthermore, the research showed that average lengths and weights between fish of the same species were also "significantly different" as a result of environmental factors.

Scientists say further investigation is needed to find specific reasons that fish of the same species, living in lakes so close to one another, can be so different.

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Voting opens for BEVA Council

News Story 1
 Eligible members of BEVA will be able to vote for their Council team until Monday, 17 August 2026. Members will have received an election email on 17 July.

There are five candidates standing for four available places on Council. They are:

  • Alexandre Triguino
  • Angela Jones
  • Beth Bryant
  • Holly Rees
  • Hugh Somerville
Full profiles for each candidate can be found on the BEVA website

Click here for more...
News Shorts
Milk recalled over presence of veterinary medicines

Graham's Family Dairy has issued a recall for its semi-skimmed milk due to the presence of veterinary medicines in the product.

In a risk statement, the Food Standards Agency said the presence of the medicines, including penicillin, make the milk unsafe to consume and 'may be a possible health risk for anyone with an allergy to antibiotics'.

Customers who bought the product are advised to return it to the store of purchase for a full refund.