For example, the nematocysts (stinging cells) of the transparent siphonophore "Agalma okenii" resemble small copepods. Dendrogramma enigmatica is a species of siphonophore, the only species of its genus. Abylopsis is a siphonophore genus in the Abylidae. These juvenile fish also appear to show preference for a particular siphonophore. Siphonophore species rarely only inhabit one location. Carl Linnaeus discovered and described the first siphonophore, the Portuguese man o' war, in 1758. "Bathyphysa conifera", a siphonophore, has been called "Flying Spaghetti Monster" in reference to the FSM. Colonial hydrozoans include siphonophore colonies, "Hydractinia", "Obelia", and many others.