The freshwater molluscs of Serbia: Annotated checklist with remarks on distribution and protection status Author Marković, Vanja Author Gojšina, Vukašin Author Novaković, Boris Author Božanić, Milenka Author Stojanović, Katarina Author Karan-Žnidaršič, Tamara Author Živić, Ivana text Zootaxa 2021 2021-07-16 5003 1 1 64 journal article 218052 10.11646/zootaxa.5003.1.1 aceedc3f-3f24-490c-8046-7528c30aac10 1175-5326 5120059 8C98CC0B-18AF-418A-A794-AA3CA9CB7409 70. Euglesa subtruncata ( Malm, 1855 ) Findings in Serbia . Pisidium subtruncatum : Tomović et al. (2010 b ) ; Tomović et al. (2014) . Common name . Short-ended pea mussel Morphology. Minute bivalve. The shell typically is up to 4 mm in length, 3 mm in height, and 2.5 mm in depth. For more details see Welter-Schultes (2012: 23 , figure on the top of the page). Distribution and ecology . Holarctic species inhabiting a muddy and sandy substrate of free-flowing waters (though it could be found in various standing waters as well). In Serbia , it was recorded in the Danube. Other remarks . Shell morphology is fairly variable. This is one of the most frequent and dominant Pisidium species in streams and small rivers, where it often coexists with P. nitidum Jenyns, 1832 . A total of 34 nominal species are known as synonyms ( Graf & Cummings 2021 ). On the IUCN Red List it has been assessed as LC (Killeen et al . 2011 b ). Genus Musculium Link, 1807