The species in question are the Hypostomus plecostomus (common pleco), Pterygoplichthys pardalis (Amazon sailfin catfish) and Pterygoplichthys disjunctivus (Vermiculated sailfin catfish).

What is Coldham’s Common parkrun? A free, fun, and friendly weekly 5k community event. Walk, jog, run, volunteer or spectate – it's up to you!