Hi,
Interfish is one room they have quite a few tanks but didn't have many unusual fish when i went, i only went once as it involves motorways and i am good at getting lost. They had a good selection of corals and marine inverts. They had harlequin rasboras listed as harlequin tetras, i got some wood shrimp and staghorn nerites from there but haven't bought fish.
The place in Huddersfield is Transcontinental goldfish, it has a lot of tanks and occasionally a few unusual plecs but i haven't been this year. They also sell reptiles and furries a warning about the rats, they had males and females in together so don't get any females from there unless you like baby rats. I pointed this out to them as it is easy to sex rats but they didn't seperate them.
Rainbow aquatics looks small from the front but is big inside, they have 2 rooms with general tropicals and goldfish, a cichlid room and a marine room. I only recently found this place as it was suggested by another forum member but i have only been 3 times and come away with new fish every time. They even had pygmy rasboras which i have been looking for for over a year and some cordoras hastatus which i hadn't seen for sale before. Its a pain for parking though but is across the road from a pub so i parked in the pub carpark.
Viscum often has unusual plecs but is generally twice the price of rainbow aquatics.
Emma
Emma