Green Terror Cichlid (Aequidens Rivulatus) Fish Profile

 My Female Green Terror Cichlid

The Green Terror (Aequidens rivulatus) is a tropical freshwater fish in the cichlid family. The fish originates from the Pacific side of South America in the coastal waters from the Tumbes River in Peru to the Esmeraldas River in Ecuador. The Green Terror can grow fairly large with male and females reaching lengths of 30 centimetres (12 in). Females are usually sexually mature at around 12 centimetres (4.7 in).

As the common name Green Terror implies, late-juvenile-phase and adult specimens can become very aggressive. This is not always the case and some individuals can be peaceful. Juvenile green terrors are often sold in pet shops and aquarium stores for the aquarium hobby. This species is often confused with the Blue Acara cichlid which is similar in appearance. A lot of fish sold as Green Terrors may actually be Blue Acaras or a hybrid between the two species.

My Green Terror in a tank with large Silver Dollars

Adult males develop a pronounced forehead hump which is composed of fatty tissue. Juveniles are tan colored with silvery-blue flecks and lack the iridescent blue, green, and orange coloration of adult specimens.

In the wild Green Terrors live in a tropical climate and prefer water with a 6.5–8.0 pH, a water hardness of 25.0 dGH, and a temperature range of 20–24 °C (68–75 °F).

The Green Terror will eat almost any fish that will fit in its mouth. 

 I lost a Giraffe Cichlid to my Green Terror

Black Tetra (Gymnocorymbus ternetzi) Fish Profile

Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Characidae
Genus:	Gymnocorymbus
Species:	G. ternetzi
Binomial name
Gymnocorymbus ternetzi (Boulenger, 1895)

The black widow tetra (Gymnocorymbus ternetzi) is also known as the black skirt tetra, high-fin black skirt tetra or black tetra. It is a freshwater fish of the characin family (family Characidae), of order Characiformes. It is native to the Paraguay and Guaporé River basins of southern Brazil, Argentina, and Bolivia.

The Black Tetra grows to about 6 cm (2.5 in) total length, it has a roughly tetragonal body shape and is greyish in colour, fading from light at the nose to near black at the tail. Two prominent black vertical bars appear just posterior of the gills. It is a schooling fish and prefers at least 6 in a group but 3-4 tetras do well in an aquarium.

In the wild the Black Tetra feeds primarily on small crustaceans, worms and insects.

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