other fish 



Dolphin, up to 5 or 6 pounds in weighty ware readily transported 

 in the livewello Like the yellowfin, they swam slowly and leisurely,, 

 readily avoiding the sides,, Of 47 fish caught between February 1 and 

 July 19s 26 were brought back alive= The others, mostly large fish over 

 7 pounds, were killed on capture, either because they were badly hooked 

 or because they were too large for the livewell^-they are relatively long 

 for their weights No serious attempt to transport dolphin was made after 

 July 19o A few were brought in during August and Octobero 



The two large wahoo were gaffed on captureo The two jacks were 

 transported in the livewell without any difficulty --they are relatively 

 hardy fish. 



ESTABLISHING THE FISH IN CAPTIVITY 



On arrival at Coconut Island,, the fish were transferred by 

 dipnet to one of two ponds (Noo 1 or Noo 5) or to a concrete tank„ The 

 general location of the ponds and the tank is shown in figure 4o 



Fond No, 1 



Attempts were made first to keep the fish in pond NOo 1. This 

 is about 50 feet wide and 100 feet long, with a maximum depth at the 

 center of about 4 feet at low tide and 7 feet at high tide„ The bottom 

 is of silt, studded with a few live coral heads, and the sides are of 

 dead coral heads piled to form a wallo Circulation is effected by tidal 

 currents through screened gates on each side,. The stern of the Salpa 

 could be brought within 40 feet of the pond (figo 4), so that the fish 

 were out of water for only a few seconds during transfero 



During May and June, three frigate mackerel, one tunny, and 

 six yellowfin were introduced to the pondo The frigate mackerel dashed 

 wildly across and around the pond? one battered itself on the coral 

 sides and died within a few minutes i the other two swam rapidly for a 

 short time and then disappeared in deep water and were not seen again — 

 presumably they also died within a short time,. The tunny and the 

 yellowfin swam rapidly around the pond,, keeping about 1 foot below the 

 surface and 2 feet from the sides„ Frequently they would bump the 

 coral sides, and occasionally they would become marooned on a coral 

 ledge. The tunny died on the third day after introduction to the pondo 

 Of the six yellowfin, one died imraediatelyp one was not seen again, and 

 presumably died within a few hours„ two died during the first night, 

 one disappeared after the second dayj, and one died during the third 

 dayo Presumably the carcasses of the fish which disappeared lodged 

 beneath coral ledges and were eaten by eels, crabs, or other animals 

 which were in the ponds they could not be found in diving with a face 

 plate. The dead fish which were recovered were badly scraped and 

 bruised from contact with the coral, A 100-watt light was used to 

 illuminate the pond at night, but this did not seem to help very much. 

 Attempts at keeping tuna in pond Noo 1 were abandoned after June 13o 



