2 
* 
Sixteen stations were occupied in the habitats classified above 
for Bikini Atoll. Numerous other collections of fishes were made in 
this atoll so that about 6fishes or more were preserved, 
representing an estisnated 200 different kinds. The data gatnered 
for the regular stations are summarized in the accompany two tables. 
An index of relative abundance was attempted based on the number 
of fishes picked up at each station divided by the approximate num¬ 
ber of square yards effectively poisoned and searched. 
Since two men with face masks can search an area 200 by 300 feet 
in two to $hree hours and most of the time I had from 3 to 5 helpers 
the number of man hours is unimportant as long as the area was 
carefully covered. Not all of the fishes killed at each station 
can be recovered but this factor, among others, probably remains 
nearly constant for all stations worked. Sufficient rotenone is 
used to kill the fidi es in the area effectively fisheJ. Since the 
eels are least affected among all the species observed, it is 
fairly certain that ample rotenone was used if the eels are dead 
after 3/A to an hour after the cloud of rotenone-laden water has 
\ 
past an area. At all stations eels were killed. The amount of 
powdered Cub$ root used varied from 15 to 35 pounds per station. 
As soon as the preserved specimens are available at the 
National Museum and I am there to work them up to species- an 
additional index will be attempted- this is the number of soecies 
at each staion. This index should reflect the suitability of the 
habitat for a varied fish fauna. 
The following conclusions have been reached concerning the fish 
fauna of Bikini Atoll. In the ocean surf at the outer edge of the 
reef, c mprising mos^%_\y the Lithothamnion Ridge the conditions 
