Big Fish Aquarium • October 2026
Monthly Promotions + Member Specials
Check current Big Fish Aquarium promotions, rotating Member Specials and featured categories for the month. Member Specials are available both online and in store. The online collection reflects online inventory only. In-store inventory is separate and may include different qualifying fish and products.
Five featured livestock categories.
This month’s Member Specials feature select koi + goldfish, puffer fish, big fish, African + parrot cichlids and designer clownfish. Online and in-store selections may differ.
More Ways to Shop Big Fish
Find Your Next Tank Addition.
Browse freshwater fish, saltwater fish, corals, invertebrates and aquatic plants. Keep an eye out for limited-time livestock offers in addition to this month’s featured Member Specials.
Online and in-store inventories are managed separately.
Livestock Flash Sale · Today Only
20% OFF All Livestock.
Today only, 10 AM–6 PM Central. Shop freshwater fish, saltwater fish, corals, invertebrates and aquatic plants online or at our Chicago store.
While supplies last. Cannot be combined with other offers. Online and in-store inventories are separate.
Today's Sale · Ends 6 PM CT
20% OFF
No code needed · Discount at checkout
October Member Specials
This month’s featured livestock.
Member Specials are available both in store and online. This collection shows qualifying Member Specials currently available to purchase online. In-store inventory is separate, so eligible fish, products and availability may be different when you visit Big Fish.
Koi + Goldfish
Shop qualifying online inventory or visit the store for current in-store Member Specials.
Puffer Fish
Freshwater and saltwater eligibility may vary between online and in-store inventory.
Big Fish
Browse qualifying larger livestock available online. In-store selection may be different.
African + Parrot Cichlids
Qualifying fish may vary between the online Member Specials collection and the store.
Designer Clownfish
Online and in-store selections change separately as livestock arrives and sells.
Before You Shop
Online and in-store inventory are separate.
The website reflects products and livestock currently available to shop online. Big Fish manages in-store inventory separately, so the store may have different livestock, dry goods, supplies and Member Specials. If you’re looking for something specific, contact Big Fish before visiting.
How Monthly Promotions Work
Check back throughout the month.
Big Fish uses this page for current monthly Member Specials, limited-time offers and promotional updates. Online and in-store inventory are separate, so availability and qualifying items may differ between shopping channels.
Rotating Member Specials
Featured categories change throughout the year. The online Member Specials collection shows qualifying items available online, while in-store Member Specials may include different inventory.
Inventory Changes Fast
Livestock can sell quickly. Online listings and in-store availability should always be treated as separate selections.
Watch for Extra Promotions
Additional promotions may be announced during the month. Promotion dates, eligibility and restrictions will be posted here when an offer is live.
Big Fish Membership
Get more from your Big Fish membership.
Eligible membership benefits can be used online, including available member savings, credits and rotating Member Specials. The online Member Specials collection reflects qualifying products available online only. In-store Member Specials and inventory may differ. Check the membership page for current benefit and eligibility details.
Big Fish Aquarium
Shop online or visit us in store.
Browse current online livestock, dry goods and supplies, check this page for monthly promotions, or contact Big Fish if you’re looking for something specific in store. Online and in-store inventories are managed separately and may differ.