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Telmatherina ladigesi, Ahl, 1936
Origin:Indonesia, the Isle of Celebes. here the fish occur in hard alkaline water
Etymology: Named in honour of Dr. Ladiges.
Synonyms:None
First European import: Germany, 1933, By O. Winkelmann. Other reports state that Ladiges brought the fish from Celebes in 1935. The fish were first bred by J. P. Arnold in 1936/7.
Description: See pictures
Care: Telmatherina ladigesi can be kept in soft water (dGH 6), but not for longer periods. Harder water, dGH 12 and up, and adding a teaspoon salt per 10 liter, as discovered by A. van den Nieuwenhuizen in 1953, creates a suitable environment for the fish. Some plants, and a lot of free swimming space, combined with frequent waterchanges are recommended. A bit of sunlight in the morning contributes to the animals well-being.
Temperature: 22-28 degrees, best below 25 degrees.
Feeding:described to be a li*&*&*&*&*&*v
Size: Up to 7 cm, females smaller.
pH: 6.0-7.5
Breeding: If kept in the conditions as described in the care section, eggs will be deposited. Arend van den Nieuwenhuizen managed to get 2000 eggs over a period of 4 months(april-august) from 2 females and a single male, of which 1450 fry were raised to adulthood. The best temperature for breeding the fish is 23-24 degrees. The eggs and fry are extremely sensitive to infusoria, and perish(fungus) if infusoria occur in large amounts. The parents are ferocious egg-eaters, and if the eggs aren't removed from the breeding tank, all eggs will be eaten. The fry grow slow, after a month they can reach 1 cm.
Sexual dimorphism: Males with elongated finnage, and larger.
Prices:2-3€
Additional: The fish are very sensitive to changes in waterchemistry, waterchanges and transferring the fish to other tanks should be done with extreme care. Simply swapping the fish from one tank to another will result in shock and death.
Picture references:All pictures E. Naus
References:Baensch, H. A., Riehl, R.(1982): Aquarien Atlas I. Mergus Verlag, Melle, Germany.(click on the link to buy this book)A. van den Nieuwenhuizen (1953): Telmatherina ladigesi AHL, 1936. Het aquarium, jrg. 24: p.p. 108-114.