SDTFS Membership Membership in SDTFS is very affordable and helps us keep the society operating.  You must be a member to vote in elections, run for office, and to buy or sell at auctions. Dues Schedule All memberships expire December 31 of the year you join, unless you join between Oct and Dec. Then your membership will expire in December of the following year. If you join in:  »» Jan-March April-June July-Sept. Oct. -Dec. for the following year Adult $15 $12 $9 $15 Family $20 $15 $10 $20 Junior (under 16) $6 $4.50 $3 $6 Please print out the membership registration form and bring it to a monthly meeting or mail it with a check to: San Diego Tropical Fish Society P. O. Box 16721, North Park Station San Diego, CA 92176