 Image search results - "species" |
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Wataka (ワタカ) Ischikauia steenackeri - Endangered endemic species, herbivorous fish.
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Mussel
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Reeds are essential
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Aquarium tunnel showing rocky habitat.
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Nigorobuna carp (ニゴロブナ 似五郎鮒) - Endangered endemic species, famous for funazushi.
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Gengorobuna carp (ゲンゴロウブナ) - Endangered endemic species
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Lake Biwa Giant Catfish is shy and often hides in its shelter.
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On another day, we were able to see the two Lake Biwa Giant Catfish out in the open. It is nocturnal, and this tank simulates night time while the aquarium is open during the day. The lake's largest endemic species and Japan's largest catfish. �
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Lake Biwa Giant Catfish is the lake's largest endemic species (max. 1.2 meter long), dubbed the King of Lake Biwa.
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The tank simulates night time since the Lake Biwa Giant Catfish is nocturnal.
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Ko-Ayu (コアユ) Native species, popular food fish. Ko-ayu is the small variety of ayu (not baby ayu) commonly eaten as tsukudani (佃煮) or tempura. Adult ko-ayu retain their small size.
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Tempura ko-ayu sweetfish do not grow as large as the ayu sweetfish which grow big in rivers. Ko-ayu remain in the lake and feed on plankton. Such an environment prevents them from getting larger.
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Biwa trout (ビワマス) - Endangered endemic species
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Biwa trout/salmon - Endemic to Lake Biwa and lives in deep, cold (15˚C), pelagic waters. These are juvenile fish. Delicious!
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Lake Biwa Littoral Zone 琵琶湖の岸辺の生き物 - Many small organisms live amid aquatic plants near the shore.
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Numa-ebi shrimp (ヌマエビ), Native species
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Sugo-Moroko gudgeon (スゴモロコ) - Endangered endemic species
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Biwa-kogata-sujishima spiny loach (ビワコガタスジシマドジョウ) - Endangered endemic species
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Biwa-Yoshinobori goby (ビワヨシノボリ) - Endemic species
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Hon-moroko (honmoroko) gudgeon (ホンモロコ) - Endangered endemic species, but it has been recovering in numbers during the 2020s.
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Utsusemi-kajika sculpin (ウツセミカジカ) - Endangered endemic species
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Utsusemi-kajika sculpin (ウツセミカジカ) - Endangered endemic species
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Abura-higai gudgeon (アブラヒガイ) - Endangered endemic species
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Biwa-higai gudgeon (ビワヒガイ) - Endemic species
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Fish with Unusual Traits 面白い習性の魚 - Gigi talking catfish.
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"Gigi" talking catfish (ギギ) Pelteobagrus nudiceps - Native species
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Tanago bitterling and clam (タナゴ) - Endangered native species, endemic to Japan, lays eggs in living clams.
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Ginbuna carp (ギンブナ) - Native species, reproduces without males.
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Invasive Species 外国からきた魚 - The aquarium has a number of tanks showing invasive species like this Red-eared slider/terrapin (ミシシッピアカミミガメ).Invasive species, popular pet, outcompetes native turtles for physical space.
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Northern snakehead (カムルチー) - Invasive species, eats aquatic insects, mollusks, and carp.
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Red swamp crayfish (アメリカザリガニ) - Invasive species, destroys water plants, outcompetes others for food.
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Black bass (Largemouth bass) are the worst invasive species in Lake Biwa. (ブラックバス・オオクチバス)
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Largemouth bass (black bass) and bluegill are Lake Biwa's worst invasive species. They eat eggs and fry of native fish, crustaceans, and insects.
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Bluegill was brought to Japan in 1960 as a food fish by then Crown Prince Akihito who received it as a gift from Chicago, IL. In 1963, the Fisheries Agency sent bluegill to Lake Biwa. Ten years later, bluegill had spread all over the lake. In 2007 in Shiga, Emperor Akihito expressed regret over bringing the bluegill.
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