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L116 (Squaliforma cf. emarginata, Thresher Pleco)

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A widely distributed species known by different L-numbers depending on where the specimen in question was collected. L011, L035, and L116 are from different rivers in Brazil, and L108 is from Ecuador. An attractive species with a light brown body covered in small dark spots. The fins are reddish-brown in colour, from whence an alternative common, "Red Fin Thresher Plec", is derived.

Fish information (behaviour and breeding):

An omnivorous plec that will eat some algae as well as sliced vegetables such as courgette, cucumber, spinach, and frozen peas. Algae-rich wafers and pellets make a good staple diet. Occasional feedings of bloodworms and other small invertebrates will be welcomed but should not be used too frequently (once or twice a week is fine). Mixes well in a quiet community tank but is territorial and should not be kept with more aggressive plecs or other catfish likely to harm it. A good choice for use with midwater cichlids such as angelfish and discus, as well as barbs, tetras, etc.

Family Group: L Numbers
Distribution Brazil, Rio ParĂ¡ and Rio Trombeta
Temperature 24-28C
Size Up to 40 cm
Water Parameters Adaptable, but avoid extremes
Water PH 6.5-7.5

Useful sources of information:

DATZ are the original source of L number information.
Other information on L numbers can be found from the book All L Numbers published by Aqualog.
On the web, a comprehensive source of information on L Numbers and catfish can be found at and also