Saddled bichir

The saddled bichir is a fish you catch in rivers. Look for a large shadow. In the northern hemisphere look for it in Jun – Sep, from 9 PM – 4 AM. It can only appear after you have caught 20 fish. Nook's Cranny pays 4,000 Bells, C.J. pays 6,000 Bells.

A Large river shadow that only bites from 9pm to 4am, after 20 catches. It is rare, so late-night river fishing with bait is your best bet; it sells for 4,000 Bells.