Linked from
The 14 pages that link to Pelvic fin, each with the reason it gives.
Lobe-finned fishRelated: Its skeletal pattern provides a second comparison with tetrapod limbs.
AcanthomorphaRelated: Its position and supporting skeleton vary across the clade’s major groups.
OphidiiformesRelated: In many cusk-eels, pelvic fins are reduced and joined into a sensory barbel.
RabbitfishRelated: Rabbitfish also have venomous spines in their pelvic fins.
GobiinaeRelated: In many gobies, pelvic fins are joined into a suction-like disc.