Electric eel

The electric eel (Electrophorus electricus) is an electric fish, and the only species in that genus. Despite the name, it is not an eel, but rather a knifefish.

Anatomy

The electric eel has an elongated, cylindrical body, typically growing to about 2 m (6 ft 7 in) in length, and 20 kg (44 lb) in weight, making them the largest species of the Gymnotiformes. Their coloration is dark gray-brown on the back and yellow or orange on the belly. Mature males have a darker color on the belly. They have no scales. The mouth is square, and positioned at the end of the snout. The anal fin extends the length of the body to the tip of the tail.

As in other ostariophysan fishes, the swim bladder has two chambers. The anterior chamber is connected to the inner ear by a series of small bones derived from neck vertebrae called the Weberian apparatus, which greatly enhances its hearing capability. The posterior chamber extends along the whole length of the body and maintains the fish's buoyancy. E. electricus has a well-developed sense of hearing. This fish has a vascularized respiratory organ in its oral cavity. As obligate air-breathers, electric eels must rise to the surface every ten minutes or so to inhale before returning to the bottom. Nearly eighty percent of the oxygen used by the fish is obtained in this way.

Index of Advanced Dungeons & Dragons 1st edition monsters

This is the Index of Advanced Dungeons & Dragons 1st edition monsters, an important element of that role-playing game. This list only includes monsters from official Advanced Dungeons & Dragons 1st Edition supplements published by TSR, Inc. or Wizards of the Coast, not licensed or unlicensed third party products such as video games or unlicensed Advanced Dungeons & Dragons 2nd Edition manuals.

TSR 2009 - Monster Manual (1977)

This was the initial monster book for the first edition of the Advanced Dungeons & Dragons game, published in 1977. Gary Gygax wrote much of the work himself, having included and expanded most of the monsters from the previous D&D supplements. Also included are monsters originally printed in The Strategic Review, as well as some originally found in early issues of The Dragon (such as the anhkheg and remorhaz), and other early game materials. This book also expanded on the original monster format, such as including the stat lines on the same page as the monsters' descriptions and introducing more stats, expanding the length of most monster descriptions, and featuring illustrations for most of the monsters. The book features an alphabetical table of contents of all the monsters on pages 3–4, explanatory notes for the statistics lines on pages 5–6, descriptions of the monsters on pages 6–103, a treasure chart on page 105, and an index of major listings on pages 106-109.

Electric eel (disambiguation)

Electric eel may refer to: