Pokémon Definitive Platinum: Just started (no badges)

What opens up at this point in the game, and everything you can catch by now that you couldn't before.

Now usable

• Tall grass
• Cave floor
• Tall grass or cave floor
• Surf
• Fish with the Old Rod
• Fish with the Good Rod
• Fish with the Super Rod
• Given to you
• Fixed encounter
• Roaming legendary

Newly reachable

Newly catchable (99)

AbraArceusAronBarboachBellsproutBidoofBudewBuizelCaterpieCherubiChimcharChinchouCombeeCuboneDarkraiDeoxysDiglettDittoDoduoEkansElectrodeFinneonGeodudeGlameowGoldeenGolduckGrowlitheGulpinGyaradosHoothootHorseaJumpluffKricketotKyogreLanturnLarvitarLatiasLatiosLotadLumineonMachopMagikarpMakuhitaMankeyMeowthMespritMewtwoMr. MimeNidoran♀Nidoran♂NosepassOnixParasPhanpyPhionePidgeotPidgeyPinecoPiplupPoliwagPonytaPoochyenaPsyduckPuruglyRaltsRattataRayquazaRegiceRhyhornSandshrewSeadraSeakingSeedotSentretShellosShinxSkittySlakothSpearowStarlyStarmieStaryuStunkySunkernSurskitTangelaTentacoolTentacruelTrapinchTurtwigWeedleWhiscashWhismurWingullWooperWormadamWurmpleZigzagoonZubat