Mummichog Mummichog The mummichog ("Fundulus heteroclitus") is a small killifish found along the Atlantic coast of the United States and Canada. Also known as Atlantic killifish, mummies, gudgeons, and mud minnows, these fish inhabit brackish and coastal waters including estuaries and salt marshes. The species is noted for its hardiness and ability to tolerate highly variable salinity, temperature fluctuations from , very low oxygen levels (down to 1 mg/L), and heavily polluted ecosystems. As a result, the mummichog is a popular research subject in embryological, physiological, and toxicological studies. It is also the first fish ever sent to space, aboard Skylab
Creature type (Dungeons & Dragons) Ooze, Plant, Shapechanger and Undead creature types were converted to keywords in 4th edition, as were many subtypes. Fifth edition's approach to creature types is similar to third edition's. The outsider type has been split into celestials and fiends, animal and vermin type have been combined into beast type, and several types have been removed (magical beast, monstrous humanoid, etc.) and the catch-all monstrosity type has been added. Creature type (Dungeons & Dragons) In the "Dungeons & Dragons" fantasy role-playing game, creature types are rough categories of creatures which determine the way game mechanics affect the creature. In the 3rd