Similar to mermen, but larger and significantly more powerful
Tritons are similar to mermen, but larger and significantly more powerful. They are able to use magic, operating as if they were Magic-users of two levels lower than their hit dice. They will often have giant sea horses as mounts.
Basic Fantasy Field Guide Omnibus
Similar to mermen, but larger and significantly more powerful
Tritons resemble humans, but have two fish-like tails instead of legs. These aquatic creatures can live in any depth of water, and are found in the elemental plane of water as well as in the prime material plane. Groups of tritons are composed as follows:
90% chance to be mounted on hippocampi (65%) or giant sea horses (35%)
Per 10 tritons, 1 leader with 4-6 hit dice (1d3+3)
Per 10 tritons, 10% chance of 1d4 tritons with magic ability of level 1d6.
Per 20 tritons, 1 leader with 7-8 hit dice (1d2+6)
Any number of tritons over 50, 1 leader with 9 hit dice
Tritons are civilised, dwelling in castles beneath the waves (80% chance) or elaborate caverns of their own excavation (20% chance). These lairs contain additional tritons:
60 normal triton warriors plus leaders as described above
1 magic user level 1d2+6
1 cleric level 1d4+7
4 clerics level 1d4+5
60+1d6×10 non-combatant females
60+ 1d6×10 non-combatant children
OSRIC