amazing fishes | More
In this general section, we have compiled some amazing and sometimes little
known facts about freshwater fish. We have included freshwater fishes from
around the world to make it more interesting.
1986, an American ichthyologist recorded the Burmese cyprinid Danionella
translucida as the smallest freshwater fish, females being mature
at only 10 to 1 lmm in standard length.
Prior to this, the smallest freshwater fish was the goby Pandaka
pygmaea from the Philippines which can grow a few millimetres
larger and is much stouter.
are several candidates for the largest freshwater fish in the world.
The South American Arapaima or Pirarucu (Arapaima gigas, Osteoglossidae)
is a prime contender at reported lengths of 4.5m, and weighing 200
kg. The largest known specimen of the Giant European Catfish, or Wels
(Silurus glanis, Siluridae) reached 5 m in length and over
300 kg. The euryhaline Russian sturgeons (Acipenseridae) Beluga (Huso
huso) (not to be confused with the white whale which bears the
same name) and Kaluga (Huso dauricus) easily reach 5 m in length,
and can weigh an astonishing 1500 kg!
This peaceful giant
is known locally as Pla Buk or "Huge Fish". Young fishes have teeth
and barbels, lacking in adults.
giant Mekong Catfish (Pangasianodon gigas, Pangasiidae) which
lives in the Mekong River, easily reaches 2.5 metres in length and
is an important food resource, having being successfully cultured
by the Thais.
very slender and small 2.5 cm catfish called the Candiru (Vandellia
cirrhosa, Trichomycteridae) from the Amazon
the nasty reputation of entering the urethra of people urinating under
water! Once inside, their spiny gill covers make them impossible to
extract except by surgery. They normally feed on the gill tissues
The predatory Giant Malayan Catfish or Tapah (Wallago leerii,
Siluridae) of South East Asia which can reach 2 m in length, has such
a huge gape (mouth width) that it has been reported to swallow small
dogs and mousedeer!
Photo: Francis Lim
Fishes in Singapore
Amazing Fishy Facts
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