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Characins
/ Characinae / Silver-tipped Tetra
Silver-tipped Tetra
Hasemania nana | Pictures
SYN: Hasemania
melanura, H. marginata, Hemigrammus nanus
PD: A slightly elongated fish with a yellow to gray body color.
The head is silver while the fins are
yellow.
The tail, dorsal, anal fins have white tips.
A yellow line that turns black near the tail,
extends the length of the body.
No adipose fin is present.
SIZE: To 2" (5 cm)
SS: None
HAB: Small black and white water streams.
South America: Brazil; in tributaries
of the Rio Purus, and in Rio Sao Francisco Basin.
S: middle
TANK: 20" (50 cm) or 10 gallons (38 l).
The tank should be arranged in dark
colors and a cover of floating plants should be used to dim the lighting.
The tank should have areas of heavy
planting and some open swimming areas.
Provide good aeration.
WATER: pH 6-7.5 (6.6), 5-20 dH (8), 72-82°F (22-28°C)
SB: A peaceful, schooling fish recommended for community tank.
Keep in groups of at least 4 individuals.
SC: Colisa,
Corydoras, Apistogramma, tetras, Loricarids.
FOOD: Live; Brine Shrimp, insect larvae; flake.
SEX: The male is slender and more colorful. It also has a white tip on its anal fin, while
the female's tip is yellow.
B: Use water with a pH of 5.5-6.5, a water hardness of 2-5 dH, and a water temperature
of 72-79°F (22-26°C). Suggest peat filtration.
Use a breeding tank with mesh netting or marbles at tank bottom so
the eggs fall out of the reach of cannibalistic parents.
The eggs hatch in 20-30 hours. The fry are easy
to raise and should be fed crushed dry and small live foods.
BP: 7.
Breeding the Silver-tipped Tetra is fairly difficult.
R: This fish differs from
Hemigrammus and
Hyphessobrycon by its lack of an adipose
fin. Long-lived.
DC: 2.
A hardy fish ideal for the community tank of a beginning aquariast.
Recent articles about fish
Overfishing may hurt Amazon forest trees
(2/5/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.
Scientists find fish that literally lives in trees
(10/17/2007) Scientists have found a fish that literally lives in trees, according to research published in The American Naturalist and highlighted in New Scientist Magazine.
Piranhas originated when Amazon was flooded by seawater
(12/4/2007) South America's piranha family of fish -- notorious as eaters of flesh -- can be traced back to a single ancestor which dispersed when the Amazon was flooded by seawater some five million years ago, report researchers from the Institut de Recherche Pour le Developpement (IRD). Today piranhas are exclusively freshwater fish found from the Orinoco River basin in Venezuela to the Parana in Argentina.
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