Right the predators like Perch which will chase and try to kill anything in that size tank are a NO for sure! The Mirror, Koi and other Carps are again a no because you have no where near enough room for them. They will reach 20"+. The Tench are also out of the question, contary to believe these are also large fish and will grow to 15". Roach are large messy shoaling fish and your tank isn't big enough so again NO! The Rudd may be possible is you brought a shoal of Golden Rudd then you could also have some Common Goldfish, Comets and Wheather Loaches.
Catching fish from the wild will no doubt bring in parasites and diseases and the wild caught fish are much harder to look after they need a fast current and plenty of vegetation and plenty of room as they would have in the wild. Wild caught fish are also illegal to keep now by law as well as many other Coldwater fish which you must now have a licence to own. Here is a list -
Which species are already on the list for England?
Abramis ballerus, Blue bream
Acipenser sp., Huso sp., Scaphirhynchus sp., Pseudoscaphirhynchus sp. and hybrids (sterlets and sturgeons)
Alburnoides bipunctatus, Schneider
Ambloplites rupestris, Rock bass
Ameiurus sp. (coldwater ameiurid catfishes, including the bullhead, Ameirus nebulosus)
Aspius aspius, Asp
Chalcaburnus chalcoides,
Danubian bleak
Chrondrostoma nasus, Nase
Chrondrostoma toxostoma, Toxostome or French nase
Ctenopharyngodon idella, Grass carp
Hypophthalmichthys molitrix,
Silver carp
Ictalurus sp. (coldwater ictalurid catfishes, including the Channel catfish, Ictalurus punctatus)
Leuciscus souffia, Blageon
Lota lota, Burbot
Micropterus salmoides, Large mouthed bass
Mylopharyngodon piceus, Black or Snail-eating carp
Oncorhynchus mykiss (Rainbow trout or Steelhead)
Oncorhynchus sp. (Pacific trout)
Polyodon spathula and Psephurus gladius (paddlefishes)
Pseudorasbora parva, Clicker barb or Topmouth gudgeon
Rhodeus sericeus, Bitterling
Salmo salar (Non-anadromous, landlocked Salmon)
Silurus sp. (coldwater silurid catfishes including the Wels, Silurus glanis)
Stizostedion sp., Zander
Vimba vimba, Vimba
Which ones are in the amendment for England?
Barbus sp. (Barbel species, excluding the native Barbus barbus)
Catostomus commersoni, Common white sucker
Channa argus, Northern snakehead
Coregonus sp. (Whitefishes, excluding the native species C. lavaretus and C.albula)
Cycleptus elongatus, Blue sucker
Cyprinella (Notropsis) lutrensis, Red shiner or Rainbow dace
Esox sp. (Pikes, excluding the native E. lucius)
Hucho sp. (Danubian Salmon or Taimen)
Lepomis sp. (Pumpkinseeds, sunfish, sunbass, crappies, bluegills and other Lepomis sp.)
Leucaspius delineatus, Motherless minnow
Misgurnus fossilis, Weather loach
Morone sp. (Striped bass, White bass and Morone hybrids)
Myxocyprinus asiaticus, Chinese sailfin sucker
Perca sp. (Perch species excluding the native P. fluviatilis)
Phoxinus (Chrosomus) eos, Northern red-belly dace
Phoxinus (Chrosomus) erythrogaster, Southern red-belly dace
Pimephales promelas, Rosy red minnow or Fathead minnow
Rhinichthys atratulus, Blacknose dace
Salmo marmoratus (Marbled trout)
Salvelinus sp. (Charr species, including the American Brook trout, but excluding the native Salvelinus alpinus)
Umbra krameri, European mudminnow
Umbra pygmaea, Eastern mudminnow
Zacco platypus, Pale chub