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The American paddlefish (Polyodon spathula) is a smooth-skinned ray-finned freshwater fish that is the only living species of the paddlefish family. The fish is often considered a relict species as it retains some morphological traits of its early ancestors, including a mostly cartilaginous skeleton and a paddle-shaped rostrum extending from its cranium for roughly one-third its body length. It is also considered a highly derived fish due to its novel adaptations, such as filter feeding. The planktivorous fish averages 5 ft (1.5 m) in length, and has a heterocercal tail fin resembling that of sharks. It is native to the Mississippi River basin, with a range extending to the Great Lakes, but is now considered vulnerable due to overfishing, poaching, habitat destruction, and pollution, and its naturally occurring populations have died off in most of its peripheral range, including New York and Pennsylvania. (Full article...)

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The Keyboard Company numeric keypad

... that The Keyboard Company's numeric keypad (pictured) was praised for not voiding Apple's warranty because it did not require soldering to install?
... that the Baratal limestone in Russia may be one of the oldest atolls in the world?
... that The West Wing's Amy Gardner is said to be the only character on the show with "a genuinely militant attitude towards equality of the genders"?
... that dead cotton is immature or underdeveloped cotton that has poor dye affinity and appears as white specks on a dyed fabric?
... that during a German charity concert for Ukraine, Slovakian singer Judita Nagyová performed a solo in the finale of Beethoven's Ninth Symphony?
... that Elphaba, the main character in Wicked, is named after L. Frank Baum, who wrote the book that inspired Wicked?
... that Carlton Town F.C., now competing at the eighth tier of the English football pyramid, was once denied promotion by a hat-trick scored by future England international Jamie Vardy?
... that Singaporean zoologist Bernard Harrison was disliked by an orangutan?

In the news

José Ramos-Horta

José Ramos-Horta (pictured) is elected as President of East Timor.
Russia's Black Sea Fleet flagship, the cruiser Moskva, sinks off the coast of Ukraine.
Flooding across KwaZulu-Natal, South Africa, leaves at least 440 people dead.
Shehbaz Sharif is elected as Prime Minister of Pakistan after Imran Khan is removed in a no-confidence motion.
A series of attacks by armed bandits kill more than 150 people in Plateau State, Nigeria.

On this day

April 23: National Sovereignty and Children's Day in Turkey (1920)

1927 FA Cup programme

1661 – Charles II was crowned King of England, Scotland and Ireland at Westminster Abbey.
1891 – Chilean Civil War: The armored frigate Blanco Encalada was sunk at the Battle of Caldera Bay, the first ironclad warship lost to a self-propelled torpedo.
1927 – Cardiff City defeated Arsenal 1–0 in the FA Cup Final (match programme pictured), the only time the FA Cup has been won by a non-English team.
1942 – Second World War: In retaliation for the Royal Air Force's bombing of Lübeck, the Luftwaffe began a series of air raids across England, beginning with Exeter.
2019 – A landslide triggered the collapse of a jade mine in Hpakant, Myanmar, resulting in six confirmed deaths and presumed dozens more.

Johannes Fibiger (b. 1867)
Halston (b. 1932)
Satyajit Ray (d. 1992)

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Today's featured picture

The blue-sided leaf frog (Agalychnis annae) is a species of tree frog in the family Phyllomedusidae native to the tropical rainforests of Central America. It is known only from the Central Valley of Costa Rica, on the slopes of the Cordillera de Talamanca, the Cordillera de Tilarán and the Cordillera Central, at altitudes between 600 and 1,650 m (2,000 and 5,400 ft). The total extent of its range is estimated to be around 16,000 km² (6,178 sq mi), and the International Union for Conservation of Nature has listed it as a vulnerable species. This photograph of a blue-sided leaf frog was captured in Heredia Province, Costa Rica, and was focus-stacked from two separate images.

Photograph credit: Charles James Sharp

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