Andvari often assumed the form of a pike and swam in the pool.
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Andvari gave the gold, except for a ring.
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Andvari, now in the form of a dwarf, goes into a rock, and tells Loki that the gold will result in the death of two brothers, will cause strife between eight princes, and will be useless to everyone.
From the en.wikipedia.org
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(Norse mythology) a dwarf who possessed a treasure that was stolen by Loki
In Norse mythology, Andvari (Old Norse "careful one"Orchard (1997:7).) is a dwarf who lives underneath a waterfall and has the power to change himself into a fish at will. Andvari had a magical ring Andvarinaut, which helped him become wealthy.
Triton is the largest moon of the planet Neptune, discovered on October 10, 1846 by William Lassell. It is the only large moon in the Solar System with a retrograde orbit, which is an orbit in the opposite direction to its planet's rotation. ...
(Icelandic) [from and spirit + vari watcher, guardian] In Norse mythology, a dwarf, owner of the treasure around which center the complex events related in the Nibelungen cycle. This gold has a twofold meaning and a markedly twofold effect on the various protagonists who covet it. See also FAFNIR