We still need a few more though. Maybe another fighter and corvette for the fishies and a kind of generic frigate for the humans?
My suggestion for a generic frigate (I'll add this to my previous post): Torpedo Frigtate (human) - Frigate armed with torpedoes. Can upgrade to fire anti-strike-craft torps. Alternate: Can't upgrade to fire anti-strike-craft torps. Instead, it has a few anti-strikecraft point defense guns.