Animal Planet original series River Monsters finished its fourth season this past Monday as the network's most- watched series ever.
The series, which follows extreme angler Jeremy Wade as he tracks down huge freshwater fish, drew 1.5 million viewers during its fourth season, according to network officials. River Monsters also bested its previous year's performance in all demos including adults 25-54 (up 9% to 836,000 viewers); men 25-54 (up 6%, 500,000 viewers)
and women 25-54 (336,000 viewers).
The series' season four opener, was the most-watched debut in
Animal Planet's history, delivering nearly 1.8 million total viewers viewers, according to the network.