The core group of fine, low-relief carvings with figural or garden scenes in painterly style appears to be the output of a single glassworks in Yangzhou. For further examples and a study of works of the Yangzhou school, see Moss, Graham and Tsang, A Treasury of Chinese Snuff Bottles, Vol. 5, Glass, nos. 1008-48.
See also, B. Stevens, The Collector's Book of Chinese Snuff Bottles, no. 251, for a similar red overlay white glass snuff bottle with goldfish swimming amidst aquatic plants. The name, Song, appears elsewhere on the output of this school and is probably either the name of one of the artists involved, or a pseudonym adopted by the school for certain of its works. The distinctive style of the bottles bearing this seal, however, suggest the former.
The Chinese name for goldfish (jinyu) is a pun for "gold" (jin) and "jade" (yu). The word for goldfish in a pond (tang) is a homonym for "hall," meaning "family home," and part of the expression jinyu mantang (May your home be filled with gold and jade).