Rusalka (CR 1)

Medium Fey (Aquatic)
Alignment: Usually chaotic neutral
Initiative: +4 (Dex); Senses: low-light vision, Listen +7, and Spot +7
Languages: Aquan, Common, and Sylvan


AC: 16 (+4 Dex, +2 natural), touch 14, flat-footed 12
Hit Dice: 2d6 (7 hp)
Fort +0, Ref +7, Will +5
Speed: 30 ft., swim 30 ft.
Space: 5 ft./5 ft.
Base Attack +1; Grapple +1
Attack: Dagger +5 melee
Full Attack: Dagger +5 melee
Damage: Dagger 1d4
Special Attacks/Actions: Beguiling song
Abilities: Str 10, Dex 18, Con 10, Int 12, Wis 14, Cha 18
Special Qualities: water breathing, water symbiosis
Feats: Weapon Finesse
Skills: Diplomacy +6, Escape Artist +9*, Hide +9*, Listen +7, Move Silently +9, Perform (sing) +9, Spot +7, Swim +8, and Use Rope +4 (+6 with bindings)
Advancement: 3-6 HD (Medium)
Climate/Terrain: Cold aquatic
Organization: Solitary or covey (3-6)
Treasure: Standard

Source: Frostburn