A small, silvery, eel-like fish which has been found in all the oceans at depths ranging from a little 
less than a mile to two and one-half miles. 
It has a row of luminous pores running the length of the 
body; and in the blackness of the profound depths it must appear like a miniature long dark boat with 
gleaming portholes. 
Its greenish, glittering eyes are perched on the ends of slender, hornlike tentacles — 
a'feature which has suggested its scientific name, Stylophthalmus paradozrus 
group has been arranged so as to have 
these luminous organs flash intermit- 
tently. Furthermore, the installation is 
arranged so that one may view the 
fishes for a few seconds in full light, as if 
in a synoptic exhibit, and then see them, 
when the light goes out, as they are 
supposed to appear in the darkness of 
the profound depths, lit up only by 
their own phosphorescent organs. 
Near the top of the group is seen a 
fish which lives on the border line be- 
tween the region of dimness and total 
Many of the fishes living in 
this region are not of a uniform sombre 
hue, but are brilliantly colored. Neo- 
scopelus is one of these. The body is 
“one dazzling sheen of purple and silver 
and burnished gold, amid which is a 
darkness. 
sparkling constellation of luminous or- 
gans”’ (Alcock). 
The glowing fish in the center is 
small fish 
known from a single specimen, which 
Barathronus diaphanus, a 
In this deep-sea fish the head glows with a soft pale light, while the body is quite dark, being covered 
with large opaque scales. 
The species (Opisthoproctus soleatus), is known by only two examples dredged 
from a depth of two and a half miles; one off the northern, and the other off the western coast of Africa 
(This specimen is not shown in the general photograph of the group, having been cut out for con- 
venience in reproduction. 
252 
It is situated in the group below the bottom fish on the right hand side] 
