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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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Practices urged to audit neutering data

News Story 1
 RCVS Knowledge has called on vet practices to audit their post-operative neutering outcomes.

It follows the release of the 2024 NASAN benchmarking report, which collates data from neutering procedures performed on dogs, cats and rabbits.

The benchmarking report enables practices in the UK and Ireland to compare their post-operative outcomes to the national average. This includes the rate of patients lost to follow-up, which in 2024 increased to 23 per cent.

Anyone from the practice can submit the data using a free template. The deadline for next report is February 2026.

Visit the RCVS Knowledge website to complete an audit. 

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News Shorts
RCVS pays tribute to well-loved equine vet

The RCVS and the Riding Establishments Subcommittee has paid tribute to well-loved veterinary surgeon and riding establishment inspector, Rebecca Hamilton-Fletcher MRCVS.

Linda Belton MRCVS, RCVS President, said: "I, along with my colleagues on the RESC, RCVS Council, RCVS Standards Committee, as well as RCVS staff, was very saddened to hear of the sudden death of Rebecca, or Becca as we knew her, last week.

"She was a true advocate for equine welfare and in her many years on the RESC worked to continually improve the quality and consistency of riding establishment inspections, all in the interests of enhanced horse welfare and rider safety."