from The Century Dictionary.
- Having spines in the fins: said of certain fishes, particularly when more than one or two spines are present in the dorsal fin. Fishes with only a single dorsal spine do not technically belong to the spiny-rayed fishes, Acanthopteri.
Sorry, no etymologies found.
Undesirable species (defined by local needs and wants such as, for example, spiny-rayed species) will possibly prove to be pests by clogging nets and reducing capture efficiency.