Sycon
Sycon is a genus of calcareous sponges belonging to the family Sycettidae. These sponges are small, growing up to 7.5 cm with a length from 2.5 to 7.5 cm, and are tube-shaped and often white to cream in colour. They are known to aquarium hobbyists as "Pineapple" or "Q-Tip" sponges, and are frequent "hitchhikers" accidentally brought in.
Species
The following species are recognised in the genus Sycon:- Sycon abyssale Borojevic & raat-Kleeton, 1965
- Sycon acanthoxea
- Sycon album Tanita, 1942
- Sycon ampulla
- Sycon antarcticum
- Sycon arcticum
- Sycon australe
- Sycon avus Chagas & Cavalcanti, 2017
- Sycon barbadense
- Sycon bellum Chagas & Cavalcanti, 2017
- Sycon boreale
- Sycon brasiliense Borojevic, 1971
- Sycon calcaravis Hozawa, 1929
- Sycon caminatum Thacker, 1908
- Sycon capricorn Wörheide & Hooper, 2003
- Sycon carteri Dendy, 1893
- Sycon ciliatum
- Sycon coactum
- Sycon compactum Lambe, 1893
- Sycon conulosum Cóndor-Luján, Louzada, Hajdu & Klautau, 2018
- Sycon cylindricum Tanita, 1942
- Sycon defendens Borojevic, 1967
- Sycon digitiforme Hozawa, 1929
- Sycon dunstervillia
- Sycon eglintonense Lambe, 1900
- Sycon elegans
- Sycon ensiferum Dendy, 1893
- Sycon escanabense Duplessis & Reiswig, 2000
- Sycon faulkneri Ilan, Gugel, Galil & Janussen, 2003
- Sycon formosum
- Sycon frustulosum Borojevic & Peixinho, 1976
- Sycon gelatinosum
- Sycon giganteum Dendy, 1893
- Sycon globulatum Hozawa, 1929
- Sycon grantioides Dendy, 1916
- Sycon helleri
- Sycon hozawai Breitfuss, 1932
- Sycon huinayense Azevedo, Hajdu, Willenz & Klautau, 2009
- Sycon humboldti Risso, 1826 type species
- Sycon inconspicuum
- Sycon incrustans Breitfuss, 1898
- Sycon karajakense Breitfuss, 1897
- Sycon kerguelense Urban, 1908
- Sycon lambei Dendy & Row, 1913
- Sycon lendenfeldi Row & Hozawa, 1932
- Sycon lingua
- Sycon lunulatum
- Sycon luteolum Tanita, 1942
- Sycon magnapicale Cóndor-Luján, Louzada, Hajdu & Klautau, 2018
- Sycon matsushimense Tanita, 1940
- Sycon mexico Hozawa, 1940
- Sycon minutum Dendy, 1893
- Sycon misakiense Hozawa, 1929
- Sycon mundulum Lambe, 1900
- Sycon munitum Jenkin, 1908
- Sycon natalense Borojevic, 1967
- Sycon okadai Hozawa, 1929
- Sycon ornatum Kirk, 1898
- Sycon oscari Van Soest & De Voogd, 2018
- Sycon parvulum
- Sycon pedicellatum Kirk, 1911
- Sycon pentactinalis Rossi, Farina, Borojevic & Klautau, 2006
- Sycon plumosum Tanita, 1943
- Sycon proboscideum Breitfuss, 1898
- Sycon proboscideum
- Sycon protectum Lambe, 1896
- Sycon pulchrum Tanita, 1943
- Sycon quadrangulatum
- Sycon ramsayi
- Sycon raphanus Schmidt, 1862
- Sycon rotundum Tanita, 1941
- Sycon satsumense Hozawa, 1929
- Sycon scaldiense
- Sycon schmidti
- Sycon schuffneri Dendy & Row, 1913
- Sycon setosum Schmidt, 1862
- Sycon simushirense Hozawa, 1918
- Sycon stauriferum
- Sycon subhispidum
- Sycon sycandra
- Sycon tuba Lendenfeld, 1891
- Sycon urugamii Tanita, 1940
- Sycon verum Row & Hozawa, 1931
- Sycon vigilans Sarà & Gaino, 1971
- Sycon villosum
- Sycon yatsui Hozawa, 1929