Study
Dimorphism, parasitism, and sex revisited: modes of reproduction among deep-sea ceratioid anglerfishes
Pietsch, Theodore W.
Ichthyological Research, 2005
Reviewed reproductive mode across the deep-sea anglerfish families using museum specimens, distinguishing species in which males attach temporarily, permanently, or not at all.
- Studied in
- Ceratioidei
- Sample size
- museum specimens across the ceratioid families
Sexual parasitism — in which a dwarf male attaches to the female and their tissues fuse — occurs in some ceratioid families and not others. Several lineages have temporary attachment, and in others males never attach at all.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Reproductive mode varies substantially across the group, and permanent fusion characterises particular lineages rather than deep-sea anglerfishes as a whole.
How NatureHQ reads it
The correction NatureHQ needs for one of the internet’s favourite animal facts. Permanent fusion is real and it is not what all anglerfishes do — the group contains several reproductive modes, and treating one lineage’s biology as the group’s is the standard error here.
- Based on preserved specimens; behaviour in life is essentially unobserved.
- Rarely caught animals mean small samples for most species.
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Published by: Springer journalsPublished in a Springer journal.
doi.org/10.1007/s10228-005-0286-2
Checked against Crossref on 2026-09-28, and they agree on the title, the authors and the year.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-09-03.