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Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Gonideinae | Contradentini | Physunio

species Physunio modelli Brandt, 1974: specimens
     1 available nominal species synonym

Recent Taxonomic Opinions

Physunio modelliGraf & Cummings (2007), Bogan (2010), IUCN (2012), Lopes-Lima et al. (2017), Bolotov et al. (2017), ... Pfeiffer et al. (2021), Graf & Cummings (2021), Jeratthitikul et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023)
Contradens sp.Pfeiffer & Graf (2015), Konopleva et al. (2017)
Physunio cf. modelliBolotov et al. (2017)
Contradens sp. 1Bolotov et al. (2017)
Physunio sp. ‘Contradens’Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020)
Physunio sp. 2Wu et al. (2021)

Range

Mekong Basin, Indochina.

Map of Georeferenced Specimens

species map


specimen
NCSM_45068

Asia, South China Sea, Malaysia Minor Coastal (South China Sea, misc. creek tribs) Vietnam, Duyen hai mien trung (South Central), Khánh Hòa Co. Nha Trang area, [pointestimated at Dien Khanh], 12.26038° N, 106.283° E


Cambodia

specimen
UA_21038

Beung Dang Teuk Leach Community Fishery Pursat Province, Cambodia

specimen
MNHN_MP_3856

de Cambodge, Siam

specimen
BMNH_MP_D369

Lao Mountains

specimen
UMMZ_304653

Pursat River, just downstream (north) of Highway 5 bridge, Pursat City, Cambodia 12.53308 103.91947

specimen
UF_507389

Tonle Sekong River, 1.6 miles upstream from AH11 Bridge. CA16-03. 13.54504, 106.01353

specimen
UF_507383

Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung. Srae Angkrorng, Ratanakiri, Cambodia. CA16-01. 13.44339, 106.60329

specimen
UF_507407

Unknown tributary of Mekong just N of Phumi Prêk Preah on AH11. CA16-06. 13.15123, 106.14521


Laos

specimen
ANSP_H19018

Laos: Mekong at Pakse

specimen
ANSP_H19006

Mekong River, Tateng, near Pakse, Laos

specimen
MNHN_MP_3568

Menam, Laos


Thailand

specimen
UF_507515

Chakkarat River at Rt. 226 in Nong Phluang. JMP17-48. 15.05821, 102.39806

specimen
UF_507489

Chi River downstream of HWY 225 in Talat Raeng. JMP17-37. 15.76964, 101.81476

specimen
UF_507485

Chi River off of Hwy 202 in Lat Yai. JMP17-36. 15.75328, 102.25225

specimen
UF_507863

Dom Yai River at Rt. 2248 bridge approx. 15 km ESE of Nam Yuen. TH16-59. 14.445989, 105.121116

specimen
USNM_786258

Huai Gaeng Yang, Pibun Mangsahan, Chong Mek, Ubon Province, Thailand

specimen
ANSP_H19015

Huai Sam Mo at Kro Rapids near Bang Gaeng Kro, Chaiyapum Province, Thailand

specimen
ANSP_H19009

Huai Ya, Gaeng Kro, Chaijapum, Thailand

specimen
UF_507843

Khulu River at Rt. 2050 bridge approx. 9.5 km SSW of Trakan Phuet Phon. TH16-51. 15.547125, 104.976925

specimen
MNHN_MP_2793

Klong Sam Mo at Gaeng Kro, Ban Sam Mo Chaiyapum Province, Thailand

specimen
USNM_786318

Klong Sam Mo at Gaeng Kro, Ban Sam Mo Chaiyapum Province, Thailand

specimen
ANSP_H18992

Klong Sam Mo at Kro Rapids, Ban Sam Mo Chaiyapum Province, Thailand

specimen
USNM_786310

Klong Sam Mo, Gaeng Kro, Thailand

specimen
USNM_786310

Klong Sam Mo, Gaeng Kro, Thailand

specimen
SMF_188874

Klong Sam Mo; Distr. Gaeng Kro; Prov. Chiayapum

specimen
UF_507745

Kong Si River at bridge ESE of Ban Kumphawapi. TH16-21. 17.097, 102.989

specimen
ANSP_336141

Lam Chi at Amphoe Kosum Phisai (on HWY 208, about 34 km due SE of Khon Kaen

specimen
SMF_188871

Lam Chi river at Ta Sabaeng, Roi Ett

specimen
SMF_188878

Lam Chi River, Mahachanachai, Ubon Prov.

specimen
ANSP_H19013

Lam Chi River, Mahachanachai, Ubon Ratchathani, Thailand

specimen
SMF_188877

Lam Pao (Lam Than) Prov. Kalasin

specimen
UF_507737

Loei River at bridge S of Ban Wang Saphung. TH16-20. 17.288, 101.766

specimen
TMMUBI_171

Lom Dom Yai River

specimen
SMF_188879

Maenam Choen, W Kon Gaen

specimen
SMF_319379

Maenam Pong at Pa Nok Kao

specimen
SMRL_2484

Maenam Pong, Pa NokKao; Thailand

specimen
SMF_188873

Mun River at Ban Ta Thum, Surin

specimen
UF_507602

Mun River at confluence with Chi River. TH15-01. 15.18188, 104.71430

specimen
SMF_188880

Mun River bei Rasi Salai; Sri Saket

specimen
UF_507465

Mun River, 2.8 km North of Ban Taklang in Na Nong Phai. JMP17-32. 15.29274, 103.50744

specimen
UF_507614

Mun River. TH15-04. 15.31534, 103.62985

specimen
UF_507624

Pao River, trib. of Chi River at Rt. 214 bridge; Mun River drainage. TH15-06. 16.34022, 103.57584

specimen
MNHN_MP_3087

Pong River at Pong Nip Dam, Kaen Province, Thailand

specimen
SMF_319380

Pong River dam N Kon Kaen

specimen
SMF_188875

Pong river, Bridge Highway 27, N of Kon Gaen

specimen
SMF_188876

Pong River, Near Dam N Kon Gaen

specimen
UF_507768

Songkhram River at bridge W of Ban Na Si Nuan on Rt. 2281. TH16-30. 17.729, 103.411

specimen
SMF_319377

Thailand Pao (Lam Tum) at Kalasin

specimen
UF_346063

Thailand, Khon Kaen Province, 1.4km E intersection Highways 2038 and 12 Deep Muddy river, red clay banks, on rocks, wood and silty bottom 220 meters, 16.4833°, 102.4167°

specimen
ANSP_H19012

Thailand: Lam Pao at Kalasin

specimen
ANSP_H19011

Thailand: Loei Prov., Maenam Pong at Ban Pa Nok Kao

specimen
SMF_220841

Thailand: Maenam Pong at Pong Nip Dam; Prov. Kon Kaen

specimen
SMF_220841

Thailand: Maenam Pong at Pong Nip Dam; Prov. Kon Kaen

specimen
SMF_319378

Thailand: Mun River Ban Ta Thum, Surin

specimen
ANSP_H19010

Thailand: Pibun, Huai Gaeng Yang, near Chong Mek

specimen
SMF_205128

Thailand: Pong river at Ban Pa Nok Kao, Loei

specimen
ANSP_H19014

Thailand: Songkram River at Wannonivat [= Wanon Niwat], Sakon Nakon Prov.

UF_346061_02. Thailand, Khon Kaen Province, 1.4km E intersection Highways 2038 and 12 Deep Muddy river, red clay banks, on rocks, wood and silty bottom 220 meters, 16° 29' N, 102° 25' E

Georeferenced Genbank Vouchers


Cambodia

UF_507389 (ICH-00439). (COI: MT905627, go to Genbank) Cambodia, Tonle Sekong River, 1.6 miles upstream from AH11 Bridge (13.545038, 106.013527).

UF_507389 (ICH-00440). (COI: MT905628, go to Genbank) ditto.

UF_507383 (ICH-00419). (COI: MT905617, go to Genbank) Cambodia, Tonle Srepok River, major bridge crossing on road from Stung Treng to Ban Lung (13.443388, 106.603294).

UF_507383 (ICH-00420). (COI: MT905618, go to Genbank) ditto.

UF_507383 (ICH-00421). (COI: MT905619, go to Genbank) ditto.

UMMZ_304653. (16S: KP795055, 28S: KP795017, COI: KP795035, go to Genbank) Pursat River, just downstream (north) of Highway 5 bridge, Pursat City, Cambodia 12.53308 103.91947.


Thailand

MUMNH_UNI0557. (16S: MT993690, 28S: MT993742, COI: MT993543, H3: MG582062, go to Genbank) Songkhram River at Ban Ya, Nong Han, Udon Thani, Thailand (17° 23' 44.5" N, 103° 18' 01.7" E).

UF_507515 (ICH-02186). (COI: MT905901, go to Genbank) Thailand, Chakkarat River at Rt. 226 in Nong Phluang (15.058209, 102.398061).

UF_507489 (ICH-02153). (COI: MT905888, go to Genbank) Thailand, Chi River downstream of HWY 225 in Talat Raeng (15.76964, 101.81476).

UF_507489 (ICH-02154). (COI: MT905889, SRA: SRX8934371, go to Genbank) ditto.

UF_507489 (ICH-02155). (COI: MT905890, go to Genbank) ditto.

UF_507485 (ICH-02146). (COI: MT905885, go to Genbank) Thailand, Chi River off of Hwy 202 in Lat Yai (15.75328, 102.25225).

UF_507485 (ICH-02147). (COI: MT905886, go to Genbank) ditto.

UF_507485 (ICH-02148). (COI: MT905887, go to Genbank) ditto.

UF_507863 (ICH-01198). (COI: MT905849, go to Genbank) Thailand, Dom Yai River at Rt. 2248 bridge approx. 15 km ESE of Nam Yuen (14.445989, 105.121116) .

UF_507863 (ICH-01199). (COI: MT905850, go to Genbank) ditto.

UF_507863 (ICH-01200). (COI: MT905851, go to Genbank) ditto.

UF_507745 (ICH-00719). (COI: MT905766, go to Genbank) Thailand, Kong Si River at bridge ESE of Ban Kumphawapi (17.09692, 102.988512).

UF_507745 (ICH-00720). (COI: MT905767, go to Genbank) ditto.

UF_507745 (ICH-00721). (COI: MT905768, go to Genbank) ditto.

UF_507745 (ICH-00722). (COI: MT905769, go to Genbank) ditto.

UF_507737 (ICH-00703). (COI: MT905761, go to Genbank) Thailand, Loei River at bridge S of Ban Wang Saphung (17.287783, 101.765735).

UF_507737 (ICH-00704). (COI: MT905762, go to Genbank) ditto.

UF_507737 (ICH-00705). (COI: MT905763, go to Genbank) ditto.

UF_507614 (2014-0594). (COI: MT905521, go to Genbank) Thailand, Mun River (15.315337, 103.62985).

UF_507614 (2014-0595). (COI: MT905522, go to Genbank) ditto.

UF_507614 (2014-0596). (COI: MT905523, go to Genbank) ditto.

UF_507614 (2014-0597). (COI: MT905524, go to Genbank) ditto.

UF_507602 (2014-0560). (COI: MT905508, go to Genbank) Thailand, Mun River at confluence with Chi River (15.18188, 104.7143).

UF_507465 (ICH-02115). (COI: MT905875, go to Genbank) Thailand, Mun River, 2.8 km North of Ban Taklang in Na Nong Phai (15.29274, 103.50744).

UF_507624 (2014-0619). (COI: MT905536, go to Genbank) Thailand, Pao River, trib. of Chi River at Rt. 214 bridge; Mun River drainage (16.34022, 103.57584).

UF_507624 (2014-0620). (COI: MT905537, go to Genbank) ditto.

UF_507624 (2014-0621). (COI: MT905538, go to Genbank) ditto.

UF_507768 (ICH-00784). (COI: MT905786, go to Genbank) Thailand, Songkhram River at bridge W of Ban Na Si Nuan on Rt. 2281 (17.72947, 103.410732).

UF_507768 (ICH-00785). (COI: MT905787, go to Genbank) ditto.

UF_507768 (ICH-00786). (COI: MT905788, go to Genbank) ditto.

UF_507768 (ICH-00787). (COI: MT905789, go to Genbank) ditto.

RMBH_biv_125_2. (16S: KX865654, 28S: KX865754, COI: KX865883, go to Genbank) Thailand: Mekong River basin, Chi River.

RMBH_biv_125_3. (16S: KX865655, 28S: KX865755, COI: KX865884, go to Genbank) ditto.

RMBH_biv_131. (28S: KX865759, COI: KX865888, go to Genbank) ditto.

RMBH_biv_131_1. (28S: KX865756, COI: KX865885, go to Genbank) ditto.

RMBH_biv_131_2. (28S: KX865757, COI: KX865886, go to Genbank) ditto.

RMBH_biv_131_3. (28S: KX865758, COI: KX865887, go to Genbank) ditto.

RMBH_biv_205_1. (28S: KY561659, COI: KY561627, go to Genbank) Thailand: Mekong River basin, Phong River.

RMBH_biv_205_2. (28S: KY561660, COI: KY561628, go to Genbank) ditto.

RMBH_biv_205_3. (28S: KY561661, COI: KY561629, go to Genbank) ditto.