Kaliwatan sa mananap ang Hydra iheringi^[1]. Una ning gihulagway ni Cordero ni adtong 1939.^[2] Ang Hydra iheringi sakop sa kahenera nga Hydra, ug kabanay nga Hydridae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Habagatang Amerika

Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 54409231. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Vervoort, W.; Schuchert, P. & van der Land, J. (2000-2007) as a contribution to UNESCO-IOC Register of Marine Organisms ,
3. ↑ Schuchert P. (2019). WoRMS Hydrozoa: World Hydrozoa Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.