242 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY 



Particulars of Fish Returned. 



1 



2 



3 



4 



5 



6 



7 



8 



LL47 



10i 

 14f 



Birkdale shore 



11/6/06 



18/4/06 



2 

 1 



15 



1 



SN 



LL67 



14 miles S.E. from Douglas 



ST 



Experiments 5 and 7 may be considered together. 

 Experiment 5 was made with fish which were caught in 

 Morecambe Bay, in the Lune and Wyre Estuaries. They 

 were liberated off Blackpool Closed Ground, a closely 

 adjacent area. Experiment 7 was made with a number 

 of plaice and dabs which had been kept at Piel Hatchery 

 during the previous winter. It is the custom to turn 

 these fish out in Barrow Channel at the end of the 

 spawning season, and we thought it might be useful to 

 mark and liberate some of these fish. Only two out of 

 twenty-eight fishes liberated have been returned (see 

 Chart III., circles with superposed crosses). Probably 

 the cause of this poor result is that the fish were possessed 

 of little vitality, and the operation of marking was fatal 

 to most of them. 



Experiment 5, however, gives the usual result. Two 

 groups of fishes may be distinguished (Chart III., 

 circles) — (1) six fishes which travelled into Morecambe 

 Bay and the Kibble Estuary, these were all recaptured 

 within four months after liberation ; and (2) six fishes 

 recaptured from offshore waters five to six months after 

 liberation. Of the fishes making the inshore migration, 

 three were flounders and two brills. Of those making the 

 offshore migration, probably at a later date, two were 

 large brills and the rest were plaice. 



