HeartGold - Water
| A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
| 
                     1 
                 | 
                Area | 0 | 1 | 2 | 3 | 4 | |
| 
                     2 
                 | 
                Blackthorn City | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     3 
                 | 
                Celadon City | Grimer | Grimer | Muk | Muk | Muk | |
| 
                     4 
                 | 
                Cerulean City | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     5 
                 | 
                Cherrygrove City | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     6 
                 | 
                Cianwood City | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     7 
                 | 
                Cinnabar Island | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     8 
                 | 
                
                     Dark Cave Blackthorn City entrance 
                 | 
                Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     9 
                 | 
                Dark Cave Violet City entrance | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     10 
                 | 
                Dragon's Den | Magikarp | Magikarp | Dratini | Dratini | Dratini | |
| 
                     11 
                 | 
                Ecruteak City | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     12 
                 | 
                Fuchsia City | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     13 
                 | 
                Ilex Forest | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     14 
                 | 
                Lake of Rage | Magikarp | Magikarp | Gyarados | Gyarados | Gyarados | |
| 
                     15 
                 | 
                Mt. Moon outside | Poliwag | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     16 
                 | 
                Mt. Mortar 1F | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     17 
                 | 
                Mt. Mortar B1F | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     18 
                 | 
                Mt. Mortar Upper Cave | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     19 
                 | 
                Mt. Silver 1F | Seaking | Seaking | Goldeen | Goldeen | Goldeen | |
| 
                     20 
                 | 
                Mt. Silver 1F top | Seaking | Seaking | Goldeen | Goldeen | Goldeen | |
| 
                     21 
                 | 
                Mt. Silver 2F | Seaking | Seaking | Goldeen | Goldeen | Seaking | |
| 
                     22 
                 | 
                Mt. Silver 4F | Seaking | Seaking | Goldeen | Goldeen | Goldeen | |
| 
                     23 
                 | 
                Mt. Silver outside | Poliwhirl | Poliwhirl | Poliwag | Poliwag | Poliwhirl | |
| 
                     24 
                 | 
                Mt. Silver top | Seaking | Seaking | Goldeen | Goldeen | Goldeen | |
| 
                     25 
                 | 
                New Bark Town | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     26 
                 | 
                Olivine City | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     27 
                 | 
                Pallet Town | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     28 
                 | 
                Route 10 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     29 
                 | 
                Route 12 | Tentacool | Quagsire | Tentacruel | Tentacruel | Tentacruel | |
| 
                     30 
                 | 
                Route 13 | Tentacool | Quagsire | Tentacruel | Tentacruel | Tentacruel | |
| 
                     31 
                 | 
                Route 19 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     32 
                 | 
                Swarm | Clamperl | |||||
| 
                     33 
                 | 
                Route 20 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     34 
                 | 
                Route 21 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     35 
                 | 
                Route 22 | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     36 
                 | 
                Route 24 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     37 
                 | 
                Route 25 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     38 
                 | 
                Route 26 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     39 
                 | 
                Route 27 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     40 
                 | 
                Swarm | Luvdisc | |||||
| 
                     41 
                 | 
                Route 28 | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     42 
                 | 
                Route 30 | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     43 
                 | 
                Route 31 | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     44 
                 | 
                Route 32 | Tentacool | Quagsire | Tentacruel | Tentacruel | Tentacruel | |
| 
                     45 
                 | 
                Route 34 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     46 
                 | 
                Route 35 | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     47 
                 | 
                Route 4 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     48 
                 | 
                Route 40 | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     49 
                 | 
                Route 41 | Tentacool | Tentacruel | Mantine | Mantine | Mantine | |
| 
                     50 
                 | 
                Route 42 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     51 
                 | 
                Route 43 | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     52 
                 | 
                Route 44 | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     53 
                 | 
                Route 45 | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     54 
                 | 
                Route 47 | Tentacool | Seel | Staryu | Staryu | Staryu | |
| 
                     55 
                 | 
                Route 47 cave gate | Wooper | Wooper | Quagsire | Quagsire | Quagsire | |
| 
                     56 
                 | 
                Route 6 | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     57 
                 | 
                Route 9 | Goldeen | Goldeen | Seaking | Seaking | Seaking | |
| 
                     58 
                 | 
                Ruins of Alph Outside | Wooper | Quagsire | Quagsire | Quagsire | Quagsire | |
| 
                     59 
                 | 
                Seafoam Islands B4F | Seel | Horsea | Slowbro | Slowbro | Slowbro | |
| 
                     60 
                 | 
                Slowpoke Well 1F | Slowpoke | Slowpoke | Slowpoke | Slowpoke | Slowpoke | |
| 
                     61 
                 | 
                Slowpoke Well B1F | Slowpoke | Slowpoke | Slowbro | Slowbro | Slowbro | |
| 
                     62 
                 | 
                Tohjo Falls | Goldeen | Slowpoke | Seaking | Seaking | Seaking | |
| 
                     63 
                 | 
                Union Cave 1F | Wooper | Quagsire | Quagsire | Quagsire | Quagsire | |
| 
                     64 
                 | 
                Union Cave B1F | Wooper | Quagsire | Quagsire | Quagsire | Quagsire | |
| 
                     65 
                 | 
                Union Cave B2F | Tentacool | Quagsire | Tentacruel | Tentacruel | Tentacruel | |
| 
                     66 
                 | 
                Unknown Dungeon 1F | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     67 
                 | 
                Swarm | Poliwag | |||||
| 
                     68 
                 | 
                Unknown Dungeon 2F | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     69 
                 | 
                Swarm | Poliwag | |||||
| 
                     70 
                 | 
                Unknown Dungeon B1F | Psyduck | Psyduck | Golduck | Golduck | Golduck | |
| 
                     71 
                 | 
                Swarm | Poliwag | |||||
| 
                     72 
                 | 
                Unknown; all Poliwag | Poliwag | Poliwag | Poliwag | Poliwag | Poliwag | |
| 
                     73 
                 | 
                Unknown; all Rattata | Magikarp | Magikarp | Magikarp | Magikarp | Magikarp | |
| 
                     74 
                 | 
                Vermilion City | Tentacool | Tentacool | Tentacruel | Tentacruel | Tentacruel | |
| 
                     75 
                 | 
                Swarm | Wingull | |||||
| 
                     76 
                 | 
                Violet City | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     77 
                 | 
                Viridian City | Poliwag | Poliwag | Poliwhirl | Poliwhirl | Poliwhirl | |
| 
                     78 
                 | 
                Whirl Islands unknown floors A | Tentacool | Horsea | Tentacruel | Tentacruel | Tentacruel | |
| 
                     79 
                 | 
                Whirl Islands unknown floors C | Horsea | Tentacruel | Seadra | Seadra | Seadra |