Midlands reservoirs sees explosion of new invasive shrimp.
A new foreign invader has laid claim to Anglian Water’s reservoirs, with news that millions of shrimp-like crustaceans appear to be thriving in Pitsford and Rutland.
Hemimysis anomala, or the Blood-red Mysid, was first discovered in the two midlands waters last year, however this year its number have exploded, providing a food source that the trout are more than willing to exploit.
Native to the Black, Azov and Caspian seas of Eastern Europe, the miniscule foreigner follows in the footsteps of Grafham’s killer shrimp. However, unlike the larger, more aggressive invader, the blood-red mysid is not thought to pose the same level of threat to the food chain – although it is so far unclear as to what impact it will have.
“The fish have been gorging on them at Rutland with big clouds of them over the deeper water and especially around the north tower," Anglian Water fishery manager John Marshal told Total Flyfisher. “We’ve been told that they don’t pose any threat to fisheries, but the long term affects are unknown. Anglers have been targeting the fish that hang around the mysid shoals though and having some good catches.
“Unlike the killer shrimp though, I don’t think we’ll be seeing anglers tie blood-red mysid patterns as they’re fairly small and almost see-through in the water.”