Eggs and Young of Fishes in tlie Danish Waters. 



(Investigations duriiig 1904 aiul earlier years.) 

 By Andreas Otterstrøm. 



Contents. 



Page 



Introduction 3 



General Portion: 



Hydrography 8 



Pelagic fish eggs 10 



Pelagic young of species with jielagie eggs 15 



> > > > > (lemersal eggs 17 



Young bottom-stages of fishes 19 



Coneluding remarks 21 



Special Portion: 



1. Species with pelagic eggs 



Cod 23 



Whiting 31 



Other gadoids 38 



Plaice 40 



Flouiider 49 



Dab 50 



Long-rough dab 52 



2. Species with demersal eggs 



Common sea-scorpion and Long-spined sea-scorpion 54 



Pogge 60 



Crested Blenny 62 



Lumpenus 62 



Gunnel 67 



Catfish 68 



Common names of the sjiecies 69 



Tab. 1. Pelagic fish eggs and young in the Danish waters during 1904 72 



Tab. 2. Pelagic fish eggs in the Danish waters dming 1904. Summary 83 



Tab. 3 A and B. Pelagic young fishes in the Danish waters during 1903 and 



1904. Summary 84 



Introduction. 



It is about 14 years since tlie Director of tlie Biological Station begau 

 investigations on the pelagic life in Danish waters. The method of the inve- 

 stigations and tlie material were not then so perfect as they are uow. The 



