Alonis (species)
- Appearance: Aquatic
- Head, torso generally humanoid (DS9 Novel: Mission Gamma: Twilight)
- Long tail in place of legs (DS9 Novel: Mission Gamma: Twilight)
- Short fins rather than arms (DS9 Novel: Mission Gamma: Twilight)
- Homeworld: Alonis
- Biological notes
- Exclusively water-breathing species (DS9 Novel: Mission Gamma: Twilight)
- Maneuvering in air-based environments requires envirosuit, antigrav chair (DS9 Novel: Mission Gamma: Twilight)
- Short-range psychokinetic ability used to manipulate environment in place of limbs (DS9 Novel: Mission Gamma: Twilight)
- Exclusively water-breathing species (DS9 Novel: Mission Gamma: Twilight)
- Cultural notes
- Flipping the bottom of their tail an indication of grateful acknowledgement, akin to a nod (DS9 Novel: Mission Gamma: Twilight)