sp refers to a planaria where the actual species is undetermined...or sometimes because several species of planaria have similar appearance or behavior and have been used in a study.
The planaria scientific name is called Planariidae. It is not a species so the binomial name could not be determined. Planaria are non-parasitic flatworms.
Kingdom:AnimaliaSubkingdom:EumetazoaSuperphylum:PlatyzoaPhylum:PlatyhelminthesClass:TurbellariaOrder:SeriataSuborder:TricladidaFamily:Planariidae
Planaria worms will occur naturally if you have a well balanced/planted tank and continued occupancy by larger species of fish (like Cichlids) that will not eat them because they are too small.
The planaria class is Turbellaria
Planaria are type of animals. Animals are not photosynthetic
planeriacomes under kingdom animalea
Planaria exist only in fresh waters.
You can find them under rocks, streams, and ponds.
Usually a planaria regeneration experiment involves cutting the planaria into different parts. The head can be separated from the tail or the planaria can be cut lengthwise, etc. After cutting the planaria, it will be observed for few days noting how the organism regenerate its lost body parts. Read more on planaria regeneration on t he link provided below.
Planaria prefer dark environments
a new sp means that sp. which has not been seen earlier by anyone(people or scientists)/has no record in anywhere.
A few easy-to-keep species are:cryptocoryne sp.(crypts)microsorum pteropus (java fern)elodea sp. (anacharis)taxyphillum barbieri (java moss) [scientific name disputed]