Union Cave B1F (Rear) in SoulSilver

This location contains the following Pokemon:

Grass or cave interior

Pokemon	Morning		Day		Evening
Zubat	22	30%	22	30%	22	30%
Raticate	22	30%	22	30%	22	30%
Golbat	22	20%	22	20%	22	20%
Geodude	21	10%	21	10%	21	10%
Rattata	20	5%	20	5%	20	5%
Onix	20	5%	20	5%	20	5%

Surfing

Pokemon	Morning		Day		Evening
Tentacool	10-20	60%	10-20	60%	10-20	60%
Quagsire	15-25	30%	15-25	30%	15-25	30%
Tentacruel	10-20	10%	10-20	10%	10-20	10%

Fishing with old rod

Pokemon	Morning		Day		Evening
Magikarp	10	95%	10	95%	10	95%
Krabby	10	5%	10	5%	10	5%

Fishing with good rod

Pokemon	Morning		Day		Evening
Magikarp	20	60%	20	60%	20	60%
Krabby	20	36%	20	36%	20	36%
Staryu					20	4%
Corsola	20	4%	20	4%

Fishing with super rod

Pokemon	Morning		Day		Evening
Krabby	40	66%	40	66%	40	66%
Kingler	40	4%	40	4%	40	4%
Staryu					40	30%
Corsola	40	30%	40	30%

Through other methods

Pokemon	Morning		Day		Evening
Lapras	20	Fridays only

Hoenn Sound Radio Show

Pokemon	Morning		Day		Evening
Absol	22	20%	22	20%	22	20%
Makuhita	22	20%	22	20%	22	20%

Sinnoh Sound Radio Show

Pokemon	Morning		Day		Evening
Bronzor	22	20%	22	20%	22	20%
Chingling	22	20%	22	20%	22	20%