486 
• PACIFIC SCIENCE, Vol. VII, October, 1953 
Fig. 4. The experimental fish, Kuhlia sandvicensis (Steindachner), attracted to the positive pole and immo- 
bilized there by the use of interrupted direct current. 
Fish 
The fish chosen for the experiments was 
Kuhlia sandvicensis (Steindachner) (Fig. 4), lo- 
cally called aholehole. This fish is bright sil- 
very when viewed from the side but appears 
dark blue when seen from above. It spawns 
along the shoreline and is quite plentiful in 
the brackish water near the mouths of streams 
and canals where it grows to a size of approx- 
imately 25 cm. 
, Aholehole were recommended for the ex- 
periments because of their hardiness and abil- 
ity to survive considerable handling. This 
turned out to be a fortunate choice, for enough 
of the fish were caught in traps in Ala Wai 
Canal to supply all experimental needs. The 
fish were held and fed in tanks of the Hono- 
lulu Aquarium when not actually being used 
for experimentation. They proved to be ad- 
mirably suited for the purpose intended. After 
a rather high initial mortality due to injury 
by trapping, practically none died, either from 
handling or from the effects of electrical 
shocks. 
Experimenters have been unanimous in 
their reports that larger fish are affected more 
