New pike cichlid described

A new species of the South American genus Crenicichla has been described by Carmen Montaña, Hernán López-Fernández, and Donald C. Taphorn in a recent issue of the journal Zootaxa. The new species...

Two new species of Characidium described

Two new species of darter tetra have been described from eastern Brazil by Brazilian scientists Weferson da Graça, Carla Pavanelli, and Paulo Buckup in the latest issue of the journal Copeia. The two...

New pelvicless killifish species described

A new species of South American killifish lacking pelvic fins has been described by Wilson Costa and Gilberto Brasil in a recent issue of the journal Copeia. The new species is named Rivulus planaltinus,...

Don't try this at home!!

I recently bumped into this video on Youtube. I doubted if I should post it here, but just for those idiots that think that turning a condom into an aquarium is a good idea, here it is.Really, don’t...

Dyed fish 2

Dyed fish

Corydoras in the Amazon

Not sure what to think of this...

Strange fish behaviour

The mudskipper

Nest builder quality in the three spined stickleback

Squid with personality

Mimicry in a new species of Lepidiolamprologus

Water spitting

Ammonia

Ammonia is a substance toxic to all vertebrates and is found in the aquatic environment. While ammonia may be present in tap water, most of the ammonia found in an aquarium is produced by the fish. Ammonia...

Nitrate

Nitrate (NO3) is produced from the oxidation of nitrite by the bacteria Nitrobacter spp. (Lewis & Morris 1986). Nitrate within aquaria is generally dismissed as not being a threat to the health of fish,...