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[edit] Wild Pokémon

Pokémon Found in Grass

Pokémon	Version	Type	Morning	Midday	Night
Bibarel	Diamond and Pearl	/	Many	Many	Many
Bonsly	Pearl Only		Some	Few	Few
Chansey	Diamond and Pearl		Few	Few	Few
Gastly	Diamond and Pearl		None	None	Some
Mime Jr.	Diamond Only		Some	Few	Few
Staravia	Diamond and Pearl	/	Some	Some	Some
Starly	Diamond and Pearl	/	Some	Some	Some
Zubat	Diamond and Pearl	/	None	None	Some

Pokémon Found while Fishing

Pokémon	Version	Type	Old Rod	Good Rod
Goldeen	Diamond and Pearl		None	Some
Magikarp	Diamond and Pearl		Many	Many

Pokémon Found while Surfing

Pokémon	Version	Type	All Day
	Diamond and Pearl		Some
	Diamond and Pearl		Many

Special Pokémon

Pokémon	Version	Type	Event
Snubbull	Diamond and Pearl		Swarms- Watch the news to find out if Snubbull are swarming (After receiving National Dex)
Miltank	Diamond and Pearl		Poké Radar (After receiving National Dex)
Tauros	Diamond and Pearl		Poké Radar (After receiving National Dex)
Spiritomb	Diamond and Pearl	/	Hallowed Tower (see Events section}

[edit] Events

1. Get a Good Rod: After leaving Hearthome City, talk to the fisherman on the first pier you see. Answer "yes" to his question to receive a Good Rod.
2. Catch a Spiritomb: On the small beach area on the far right side of the route, you will see a crumbling tower. Use the Odd Keystone to restore the tower. After talking to 32 people underground, return to encounter a wild Lv.25 Spiritomb.