Review for LEGO set 7978 Angler Attack from Brickipedia
“The angler fish's back "fins" are made from slopes. The sides of its body are using SNOT with "fins" on both of them. The lower "jaw" is built from shaft holders with teeth slid in. The top "jaw" features a near-identical design to the lower jaw. The "eyes" are built from... More transparent domes and are tilted away from the centre.”
Full review at brickipedia.fandom.com