Under the name “Hasemania hansseni” a new tetra has recently appeared on the market, which with its intense orange coloration is indeed somewhat reminiscent of the well-known copper tetra, Hasemania nana. However, one of the characteristics of the genus Hasemania is that it lacks the adipose fin that is so typical for tetras. This is however present in the new imports. They are Hyphessobrycon moniliger, a species first mentioned in scientific literature by Lowe-McConnell in 1991 as “Hyphessobrycon sp. golden tetra”. It was then scientifically described in 2002 based on specimens from the Rio Tocantins drainage. In the meantime it was also reported from the Rio Tapajós drainage.
The males of H. moniliger have broadened fin rays in the anal fin, which are also covered with numerous hooks. This characteristic is known rather from the Hemigrammus relationship, but as we have already mentioned several times, the systematics of the small tetras of South America is so far only very unsatisfactory clarified.
With about 4 cm total length H. moniliger remains handy small. They are very beautiful and peaceful fish, a real enrichment of the assortment!
For our customers: the animals have code 261393 on our stocklist. Please note that we only supply wholesale.
Text & photos: Frank Schäfer