Belgian Exclusive Economic Zone, British Isles, Calais, English Channel, European waters (ERMS scope), Flemish Banks, Irish Exclusive economic Zone, Portuguese Exclusive Economic Zone, Spanish Exclusive Economic Zone, United Kingdom Exclusive Economic Zone, Wimereux

Cellaria fistulosa is widely distributed  in warm and temperate sea. It is found in waters off all British coasts

Cellaria fistulosa is an erect bryozoan, composed of jointed dichotomous branches. The colonies form large white clumps, which grow 5-6 cm in height or more. The colonies often grow bigger than other Cellaria species, and branch frequently to form an extensive diffuse growth. The internodes narrow proximally (towards the colony origin), but they are not club-shaped as with C. sinuosa. Cellaria fistulosa is a more slender species than C. sinuosa, with a smaller internode length and diameter (commonly 0.4-0.8 mm). Colonies are anchored to the substrate via chitinous rootlets.

Autozooids are generally hexagonal, but pointed at the tip. The are arranged in a longitudinal series, each autozooid being in contact with those directly above and below it.

Differentiating between Cellaria species is difficult and C. sinuosa is frequently mistaken for C. fistulosa

Depth range based on 152 specimens in 1 taxon.
Water temperature and chemistry ranges based on 16 samples.

Environmental ranges
  Depth range (m): 0 - 201
  Temperature range (°C): -0.826 - 12.146
  Nitrate (umol/L): 4.149 - 31.069
  Salinity (PPS): 34.243 - 35.339
  Oxygen (ml/l): 5.811 - 6.906
  Phosphate (umol/l): 0.250 - 2.108
  Silicate (umol/l): 2.451 - 61.887

Graphical representation

Depth range (m): 0 - 201

Temperature range (°C): -0.826 - 12.146

Nitrate (umol/L): 4.149 - 31.069

Salinity (PPS): 34.243 - 35.339

Oxygen (ml/l): 5.811 - 6.906

Phosphate (umol/l): 0.250 - 2.108

Silicate (umol/l): 2.451 - 61.887
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

The species is able to colonise stones and shells in subtidal waters.  Its depth range is uncertain, but it is known to occur at depth of 30-80   metres in the Mediterranean.