Hello fellow nottingham(ish) folk, I second on kayes pet centre, sometimes has some decent fish in, staff know a bit but they will probably sell you almost anything.
Pets at home is ok, never bought fish from there as i used to see alot of dead fish there when i got my first tank and stuff, on the other hand there selection of plants is excellent and they also have good pricing on tanks and equipment.
I find bardills has a decent range of fish also and they also have an excellent range of filters and tanks and very competitive prices, thats where i get my hikari fish food and any odd bits of equipment i need.
Finally theres wharf aquatics! Amazing shop, its massive, the display tank is a wonder to behold and they have the best selection of oddball fish in the area as far as im away, they have a good healthy stock of traditional tropical fish also. Have to go up to junction 28 of the m1 though to get to it but its fairly easy to get to away that, well worth one visit at least just to see th fish.
Ok i said finally but i just remembered Maidenhead aquatics in East bridgford garden centre, also an excellent shop, very good quality fish including discus, also got some interesting fish in like headstanders and clown killies and stuff like lampeyes.
Ok i think im done! Hope that helped some one but it probably didnt lol