database_fish_urban_tsurumi

Study Extent

The investigation of fish fauna was conducted at 71 stations in the Tsurumi River basin (Fig. 1), mainly in environmentally degraded tributaries where data on fish fauna has not yet been collected. The survey was conducted during summer (August 20 to October 5, 2021) and winter (December 28 to February 8, 2022).

Sampling

The fish survey was conducted using a pulsed DC Smith-Root Model LR-24 backpack electrofisher (Smith-Root Inc., Vancouver, WA, U.S.A.) at each habitat (rapid, run, pool, glide, slack, and backwater) of the 71 stations.

Method steps

1. We recorded occurrence data, which were identified on-site and in the laboratory according to Kawanabe and Mizuno (1989) and Seno (2007).

The species that were found belonged to the following orders: Cypriniformes (13 species), Perciformes (9 species), Siluriformes (2 species), Beloniformes (1 species), Cyprinodontiformes (1 species), Mugiliformes (1 species), and Osmeriformes (1 species). The families were Cyprinidae (10), Gobiidae (7), Cobitidae (3), Centrarchidae (2), Adrianichthyidae (1), Bagridae (1), Mugilidae (1), Osmeridae (1), Poeciliidae (1), and Siluridae (1).

1. Rhynchocypris lagowskii steindachneri
   rank: species
2. Plecoglossus altivelis
   rank: species
3. Gymnogobius urotaenia
   rank: species
4. Zacco platypus
   rank: species
5. Pseudogobio esocinus
   rank: species
6. Misgurnus
   rank: genus
7. Nipponocypris temminckii
   rank: species
8. Carassius auratus langsdorfii
   rank: species
9. Poecilia reticulata
   rank: species
10. Cyprinus carpio
    rank: species
11. Rhinogobius giurinus
    rank: species
12. Cobitis biwae
    rank: species
13. Rhinogobius nagoyae
    rank: species
14. Gymnogobius petschiliensis
    rank: species
15. Gnathopogon elongatus elongatus
    rank: species
16. Tridentiger obscurus
    rank: species
17. Rhinogobius　
    rank: genus
18. Silurus asotus
    rank: species
19. Tridentiger brevispinis
    rank: species
20. Micropterus salmoides
    rank: species
21. Lepomis macrochirus
    rank: species
22. Mugil cephalus
    rank: species
23. Oryzias latipes
    rank: species
24. Pungtungia herzi
    rank: species
25. Pseudorasbora parva
    rank: species

The Tsurumi River, which flows through Tokyo and Kanagawa prefectures in Japan, has been urbanized since the 1950s, and 85% of the river basin is now comprises urban areas. This data reports the results of a survey of the fish fauna of a tributary river for which information is lacking.