Just so everyone knows this is what the fish tank is. Not sure but I think it increases one of the stats of all fish weapons: laser fish, fish, heavenly sword e.c.t :
Laser Rain | Soul Knight Wiki | Fandom
Fusion Drill | Soul Knight Wiki | Fandom
So yeah the Grilled Laser Fish is pretty good. : r/SoulKnight
OP GLITCH/BUG* Laser Fish Bug with PAUSE Button - Soul Knight 2.5.5 - YouTube
Soul Knight - Making Laser Fish OP - YouTube
Explore the Best Soulknight Art | DeviantArt
Grilled Laser Fish | Soul Knight Wiki | Fandom
Making a Laser Fish From Soul Knight IRL - YouTube