Swordfish

Swordish were a peaceful species of predatory fish, named for their flat pointed bills that resembled swords.

Combat
Being non-aggressive creatures, swordfish typically fled from conflict unless provoked or trained to engage in combat. When they did fight, a swordfish would use their long sword-like bills.

Ecology
Medium-sized swordfish were often kept as pets or utilized as guards by other creatures, typically aquatic elfs and dolphin communities.

Trivia

 * Longships that hailed from Gundarlun Island often depicted swordfish on their figureheads.