Reptiles
Both: Pancake, southern brown and radiated tortoises; Arrau river, McCord’s snake-necked, Mississippi map, spotted pond and Chinese stripe-necked turtles; mata-mata; Chinese crocodile and caiman lizards; common chuckwalla; green basilisk; gila monster; Komodo dragon; corn snake; Cuvier’s dwarf python; yellow anaconda;
Leipzig:Texas gopher and western hinge-backed tortoises; alligator snapping, Malaysian giant pond, Malaysian painted and yellow-spotted Amazon river, black-breasted leaf turtles, Central Vietnamese flowerback box, pig-nosed, spiny soft-shelled and common snake-necked turtles; Nicaraguan slider
Armadillo, Baja California rock, brown horn-headed, eastern garden, frill-necked, West African rainbow and blue spiny lizards; common green and Fiji banded iguanas; Cuban brown and Hispaniolan green anoles; Chinese water dragon; eyespot, mourning, Tokay, Williams electric blue and greater Madagascar and yellow-headed day geckos; common blue-tongued and prehensile-tailed skinks; Haitian giant galliwasp; wide-tailed zonosaur; panther chameleon; peach-throated monitor
Royal python; garden tree boa; green bush ratsnake; mangrove and Sinaloan milk snakes; ring-necked spitting cobra; broad-banded copperhead; horned adder; puff adder; Mexican land-headed rattlesnake
American alligator; dwarf crocodile; false gharial
Rotterdam: African spurred, common spider, elongated, Greek, Galapagos giant and angulated tortoises; Annam leaf, Ouachita and false map, Neotropical painted wood, spiny hill, green, hawksbill and Arrau river turtles; Chinese three-striped, south-east Asian, Zhou’s and McCord’s box turtles; red-eared and yellow-bellied sliders
Philippine sailfin and Sudan plated lizards; Hispaniolan rhinoceros, Utila spiny-tail and West Indian iguanas; Gillen’s pygmy mulga and lace monitors;
Burmese rock python; Cuban and emerald tree boas; California and scarlet king snakes: San Diego gopher, rhinoceros and common pine snakes; spectacled cobra
Nile (including western) and slender-snouted crocodiles
Amphibians
Both: Colorado River and spotted toads
Leipzig: African clawed, banded bull, green puddle, Maranon and spotted poison, Montserrat whistling, red-eared greenback, Sambava tomato, spotted reed, yellow stream and greenhouse frogs; little and black-spotted rock frogs; blue, green and black, yellow-banded and Golfodulcean poison dart frogs; Australian green, Cuban, file-eared, Mission golden-eyed, spot-legged, white-lipped and Chinese gliding tree frogs; golden mantella; marine and Great Plains toads
Rotterdam: Greater siren; Japanese fire-bellied newt
Sambava tomato frog; Dyeing dart frog; imitating poison dart frog; Brongersamas and common Indian toads; mountain chicken
Fish
Both: black, spinecheek and clown anemone fish; arapaima; tinfoil barb; , sunburst butterflyfish; Banggai cardinal fish; red-tail catfish; small-spotted catshark; yellowtail clownfish; pennant coral fish; whitetail damselfish; sixbar distochodus; redbelly yellowtail fusilier; spotted gar; goldline; longnose hawkfish; striped headstander; yellowhead jawfish; banded leporinus; clown loach; mandarin fish; silver moony; laced and zebra morays; opaleye; tiger oscar;pacu; palometa; royal panaque; red piranha; long-spine porcupine fish; swallowtail seaperch; sergeant-major; tricolor shark minnows; swell shark; sand smelt; ocean surgeon; Pacific sail-fin, palette and powder blue surgeonfish; yellowtail tang; Mozambique tilapia; bluestreak cleaner and sixline wrasses
Leipzig: Indian algae-eater; pink anemone fish; flame angel; Manacupuru, regal, freshwater, earspot, two-spined and emperor angelfish; two-striped aphyosemion; black arawana; Burmese, marble, spotted and banded archerfish; red line torpedo, filament, melon, African banded, yellow-eyed silver, Tambrapami, spotscale, ticto and bandula barbs; harlequin bass; peach fairy basslet; orbicular batfish; blue, Penang and howong bettas; grey, ornate and armoured bichirs; Congo blackfin; tompot blenny; dwarf and redtail botias; bowfin; brown bullhead; freshwater, bluecheek, pyramid and copperband butterflyfish
King of the mullets and threadfin cardinal fish; longnose Nilem carp; popeye catalufa; porthole, whiptail, leopard, ghost, flagtail, bristlenose, butter, giraffe, blotched, Raphael ,ripsaw, porthole and giant upside-down, Thailand giant, three-striped glass, spotted talking, whiptail and Adolfs catfish; gar and darter characins; cherubfish; firemouth, orange and black-and-gold chromide; spiny chromis; pearl, Nyereres, moga, midas, many-spotted, sardine, lionhead, Kotsovato, jewel, humphead, red devil, Jack Dempsey, Salvines, sandhill dwarf, ring-tailed pike, Kenyi, redhead, featherfin, blue neon, purple, ram, black diamond, blackgill Tanganyikan, cockatoo, snail , spotted damba, slender buffalo, wolf and aurora cichlids; Red Sea, tomato and Sebas clownfish; blue-eyed cochliodon; painted comber; Ceylonese combtail; comet; Sterbas, skunk and bronze corydoras; cowfish; ornate-banded, tailspot and spotted ctenopomas; pinstripe damba; chrome, cloudy, bluestreak and blue green damselfish; giant and rosy danios; azure and Talbots demoiselles; dinghani; discus fish; long-snout, shark-tailed distochodus; marbled dragonet
Caete, redhump, Suriname and high-head earth-eaters; orange-barred and spotted garden eels; electric eel; snorkel elephant fish; Malawi eyebiter; bristle-tail file fish; fire eel; barred flagtail; blue flash; wide-eyed flounder; grey and silver flying foxes; four-eyed fish; foxface
Cuban gar; black ghost; sixspot and maiden gobies; blue-tailed and butterfly goodeids; giant, pearl, kissing, three-spotted and giant redfin gouramis; royal gramma; miniatus, clown and blue & yellow groupers; purple-spotted and Australian spotted gudgeon; pointed-nosed guitarfish
Celebes halfbeak; blue & yellow and spindle haps; mountain hardyhead; spotfin, spotted and marbled hatchetfish; red-spotted hawkfish; many-banded headstander; red tail hemiodus; hump-head; jewel fish and blue neon jewel fish; least killifish African knifefish; rock kribensis;
Longfin labio; Malayan and Amazon leaffish; three-spot leporinus; blackbelly, Tiburon and Perugias limias; red lionfish; merry widow livebearer; hillstream, great spotted, half-banded, Chinese golden zebra, Burma border, Burmese, banded tiger, skunk, zebra and almorha loaches; Australian, South American and West African lungfish
Scrapermouth and zebra mbunas; Vietnamese mountain and stone-lapping minnows; Gills and sailfin mollies; ribbon moray; Nigeria mormyrid; black band myleus; Atlantic mudskipper; flathead grey mullet; zebra obliquidens; golden otoclinus; pacupeba; common, striped and red Madagascar panchaxes; Nile and climbing perches; blotched picarel; Australian and Japanese pineapple fish; southern platyfish; lyre-tail, common, zebra, gold spotted and chocolate plecos; silver prochilodus; eyespot pufferfish; Valentins and false puffers; pumpkinseed
Lake Eacham, Murray River, Lake Kutubu, Parkinsons, Boesemans, McCullochs, western and barred rainbow fish; blackline and harlequin rasboras; razorfish; pearly razorfish; blotched fantail ray; redfish; Daisy's ricefish
Malawi sand diver; speckled sandperch; Silver scat; small red and weedy scorpionfish; pot-bellied seahorse; common severum; harlequin, giant black, redtail and rainbow shark minnows; blacktip reef, Japanese bullhead, brown-banded bamboo and epaulette sharks; rainbow shiner; spotted silver dollar; red-tailed silverside; African and emperor snakeheads; mangrove red snapper; pinecone soldierfish; barred sorubim; barhead spinefoot; redtail splitfin; black marbled, highfin spotted, Malawi and angel squeakers; crown squirrelfish; three-spined stickleback; smooth-back river stingray; stripey; beluga, Siberian and Russian sturgeon; sultan fish; orange-spot, Sohal and yellowfin surgeonfish; green swordtail; Brichards many-spotted, large-eyed synodontis.
Emperor, yellow and Atlantic blue tangs; red phantom, longfin, Orange Bolivia lemon, lemon, Borks blue, firehead, false silver, ember, blind cave, Congo, Mexican, cardinal, peon, green neon, true big-scale, yellowtail. stoplight and black tetras; silver tigerfish; zebra and spotted tilapias; trevally; goldenorange-lined triggerfish; treefish; spotted trumpetfish; tucan fish; shortfin turkeyfish; bignose unicornfish; chameleon whiptail; Japanese wobbegong;
Rotterdam: Greater amberjack; Bermuda, queen, French, grey and orangeback angelfish; arowana; barjack; great barracuda; orbicular batfish; bicolour blenny; boarfish; yellow boxfish; Atlantic bumper; bank and big longnose, reef, spotfin and longsnout butterfly fish; cabezon; North African and spotted sailfin suckermouth catfish; blue chromis; Bermuda sea chub; Atlantic cod; garibaldi and giant damselfish; goldtail demoiselle; striped doctorfish; common dragonet; European eel; European eelpout; elegant firefish; longnose gar; yellow goatfish; blackeye, sand, fire, twin-spot and Okinawa gobies; sea goldie; masked and kelp greenlings; black, gag, giant and Nassau groupers; bluestriped grunt; blackchin guitarfish; Endlers guppy; tub gurnard; Atlantic and false herrings; Spanish hogfish; horse-eye and Crevalle jacks; ladyfish; lookdown; Atlantic horse and Atlantic mackerels; black margate; laced, giant and spotted morays; thicklip grey mullet; nursehound; butterfly peacock fish; pile perch; permit; South American pilchard; European plaice; pollack; sheepshead porgy; porkfish; pouting; Caribbean sharpnose puffer; cownose, thornback and small-eyed rays; yellowtail reeffish; Canary rockfish; blue runner; spotted scat; shorthorn sculpin; European seabass; common, white, gilthead and common two-banded seabreams; lined and short-snouted seahorses; common bluestripe and swallowtail seaperch; scissortail sergeant; Atlantic nurse, blacknose, leopard, sandbar, horn and blacktip sharks; California sheephead; big-scale sand smelt; common smoothhound; sailfin, yellowtail and grey snappers; longspine snipefish; common snook; common sole; tiger sorubim; common, southern, white-blotched and ocellate river stingrays; European sea sturgeon; sunshine fish; clown, elongate, razor and convict surgeonfish; oriental sweetlips; twotone tang; Atlantic tarpon; common African tigerfish; Nile tilapia; black triggerfish; rainbow trout; tube-snout; turbot; bluespine unicornfish; whiting; Ballan, Cortez rainbow, East Atlantic peacock and cuckoo wrasses
Leipzig wins this one on the size and variety of its species, although Rotterdam has a couple of urodeles.