Astyral Swarm - Ghost fishes found in dungeons

An Astyral Swarm is a silvery ghost fish, they swim in a misty otherworldly fog, that comes from nowhere and goes to more of the same. They are creepily calming, and some dungeon walkers seek them out to either watch their ethereal displays or to feed on their famed succulence.


Astyral Swarm 

N Tiny Magical Beast (Aquatic) (Incorporeal)
Init +7; Senses blindsense 30 ft., keen scent, low-light vision; Perception +3

DEFENSE
AC 18 touch 18, flat-footed 13 (+1 deflection, +5 Dex, +2 size)
hp 30hp (4d10+8 con), Individual hp 7
Fort +6, Ref +9, Will +2
Defensive Abilities swarm traits

OFFENSE
Speed swim 30 ft.
Melee Individual Prime Bite +11 (1d3 dmg)
Melee Astyral swarm (3d6)
Space 10 ft.; Reach 0 ft.

STATISTICS
Str 3, Dex 21, Con 15, Int 1, Wis 12, Cha 12
Base Atk +4 CMB +2 CMD 17

Feats Improved Initiative, Skill Focus (Stealth)
Skills +17 Stealth , +16 Swim; +8 Bonus to Swim Score

ECOLOGY
Environment Dungeon and Astyral
Organization Shoal (2–5 swarms), or school (6–10 swarms)
Treasure none

Astyral Flippers are an otherworldly fish that can exist in multiple planes. They are small, thin, and silvery fish with a colourful stripe on their bellies. They swim in the Astyral, a fog like mist that while exists primarily in the Astral plane, seeps into everywhere that magic exists. For mortals, they appear like ghost fishes swimming in a mist coming from literally nowhere going to the same, strangely a calming presence.

Most times the swarm swims through an area, and if a party simply waits a few minutes, the swarm will pass back into the Astral. If the party attempts to interact with the fishes, and attacks the fish, there is a 25% cumulative chance per round the swarm will swim closer to the prime world, and then use the swarm attack damage. Once fully in the prime, they have a 10% chance (non-cumulative) of leaving. every round

The Astyral Flipper is an incredible, indescribable taste, and many foodies are willing to pay small sums (250+ gp) for the chance of trying it as it's taste is legendary. There is no known way of cultivating them, they must be caught individually and in the wild.