Name: Pseudolactococcus piscium (Williams et al. 1990) Abe et al. 2025

Category: Species

Proposed as: comb. nov.

Basonym: Lactococcus piscium Williams et al. 1990

Etymology: pis’ci.um. L. gen. masc. pl. n. piscium, of fishes

Gender: masculine

Type strain: ATCC 700018; CCUG 32207; CCUG 32732; CECT 4493; CIP 104371; DSM 6634; HR1A-68; HRIA 68; JCM 11055; JCM 16647; NCFB 2778; NCIMB 13196

Conduct genome-based taxonomy at

16S rRNA gene: DQ343754 Analyse FASTA

Valid publication: Abe K, Yuki M, Imagawa Y, Hisatomi A, Ohkuma M, Sakamoto M, Noda S. Genome-based reclassification of the genus Lactococcus and two novel species Pseudolactococcus yaeyamensis gen. nov., sp. nov. and Lactovum odontotermitis sp. nov. isolated from the gut of termites. Int J Syst Evol Microbiol 2025; 75:6803.

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 6 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6862.

Nomenclatural status: validly published under the ICNP

Taxonomic status: orphaned species (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Lactococcus piscium Williams et al. 1990	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Pseudolactococcus piscium is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Pseudolactococcus.
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-10.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Pseudolactococcus Abe et al. 2025

Assigned by: Abe K, Yuki M, Imagawa Y, Hisatomi A, Ohkuma M, Sakamoto M, Noda S. Genome-based reclassification of the genus Lactococcus and two novel species Pseudolactococcus yaeyamensis gen. nov., sp. nov. and Lactovum odontotermitis sp. nov. isolated from the gut of termites. Int J Syst Evol Microbiol 2025; 75:6803.

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Record number: 65872