[REQUIREMENT] Can be used by sending the top card of the Deck to the GY.
[EFFECT] This card gains 100 ATK x [The combined total of Levels of face-up Fish monsters you control] until the end of the turn, then, you can choose 1 “Hydro Cannon Big Bluefin” in your GY and add it to the hand OR Special Summon it to your field face-up.